Documentation: Update Information on Available Versions in README.md.

Update the information on the available versions of Subsurface in
README.

Also update the documentation to reflect the renaming of `INSTALL` to
`INSTALL.md`.

Signed-off-by: Michael Keller <github@ike.ch>

Documentation/50-pot/subsurface-user-manual.pot

@@ -135,7 +135,7 @@ msgid ""
 "mailto:subsurface@subsurface-divelog.org[our mailing list] and report bugs "
 "at https://github.com/Subsurface/subsurface/issues[our bugtracker].  "
 "For instructions on how to build the software and (if needed) its "
-"dependencies please consult the INSTALL file included with the source code."
+"dependencies please consult the INSTALL.md file included with the source code."
 msgstr ""
 
 #. type: Plain text

Documentation/fr/po/subsurface-user-manual.fr.po

@@ -175,7 +175,7 @@ msgid ""
 "an email to mailto:subsurface@subsurface-divelog.org[our mailing list] and "
 "report bugs at https://github.com/Subsurface-divelog/subsurface/issues[our "
 "bugtracker].  For instructions on how to build the software and (if needed) "
-"its dependencies please consult the INSTALL file included with the source "
+"its dependencies please consult the INSTALL.md file included with the source "
 "code."
 msgstr ""
 "Ce manuel explique comment utiliser le programme _Subsurface_. Pour "
@@ -184,7 +184,7 @@ msgstr ""
 "pouvez envoyer un e-mail sur mailto:subsurface@subsurface-divelog.org[notre "
 "liste de diffusion] et rapportez les bogues sur http://trac.hohndel."
 "org[notre bugtracker].  Pour des instructions de compilation du logiciel et "
-"(si besoin) de ses dépendances, merci de consulter le fichier INSTALL inclus "
+"(si besoin) de ses dépendances, merci de consulter le fichier INSTALL.md inclus "
 "dans les sources logicielles."
 
 #. type: Plain text

Documentation/user-manual.html.git

@@ -460,7 +460,7 @@ the software, consult the <em>Downloads</em> page on the
 Please discuss issues with this program by sending an email to
 <a href="mailto:subsurface@subsurface-divelog.org">our mailing list</a> and report bugs at
 <a href="https://github.com/Subsurface/subsurface/issues">our bugtracker</a>.  For instructions on how to build the
-software and (if needed) its dependencies please consult the INSTALL file
+software and (if needed) its dependencies please consult the INSTALL.md file
 included with the source code.</p></div>
 <div class="paragraph"><p><strong>Audience</strong>: Recreational Scuba Divers, Free Divers, Tec Divers, Professional
 Divers</p></div>

Documentation/user-manual.txt

@@ -34,7 +34,7 @@ https://subsurface-divelog.org/[_Subsurface_ web site].
 Please discuss issues with this program by sending an email to
 mailto:subsurface@subsurface-divelog.org[our mailing list] and report bugs at
 https://github.com/Subsurface/subsurface/issues[our bugtracker].  For instructions on how to build the
-software and (if needed) its dependencies please consult the INSTALL file
+software and (if needed) its dependencies please consult the INSTALL.md file
 included with the source code.
 
 *Audience*: Recreational Scuba Divers, Free Divers, Tec Divers, Professional

Documentation/user-manual_es.html.git

@@ -517,7 +517,7 @@ web</a>. Por favor, comenta los problemas que tengas con este programa enviando
 mail a <a href="mailto:subsurface@subsurface-divelog.org">nuestra lista de correo</a> e informa de
 fallos en <a href="https://github.com/Subsurface/subsurface/issues">nuestro bugtracker</a>.
 Para instrucciones acerca de como compilar el software y (en caso necesario)
-sus dependencias, por favor, consulta el archivo INSTALL incluido con el código
+sus dependencias, por favor, consulta el archivo INSTALL.md incluido con el código
 fuente.</p></div>
 <div class="paragraph"><p><strong>Audiencia</strong>: Buceadores recreativos, Buceadores en apnea, Buceadores técnicos,
 Buceadores profesionales.</p></div>

Documentation/user-manual_es.txt

@@ -61,7 +61,7 @@ web]. Por favor, comenta los problemas que tengas con este programa enviando un
 mail a mailto:subsurface@subsurface-divelog.org[nuestra lista de correo] e informa de
 fallos en https://github.com/Subsurface/subsurface/issues[nuestro bugtracker].
 Para instrucciones acerca de como compilar el software y (en caso necesario)
-sus dependencias, por favor, consulta el archivo INSTALL incluido con el código
+sus dependencias, por favor, consulta el archivo INSTALL.md incluido con el código
 fuente.
 
 *Audiencia*: Buceadores recreativos, Buceadores en apnea, Buceadores técnicos,

Documentation/user-manual_fr.html.git

@@ -526,7 +526,7 @@ problème, vous pouvez envoyer un e-mail sur
 <a href="mailto:subsurface@subsurface-divelog.org">notre liste de diffusion</a> et
 rapportez les bogues sur <a href="http://trac.hohndel.org">notre bugtracker</a>.  Pour
 des instructions de compilation du logiciel et (si besoin) de ses
-dépendances, merci de consulter le fichier INSTALL inclus dans les sources
+dépendances, merci de consulter le fichier INSTALL.md inclus dans les sources
 logicielles.</p></div>
 <div class="paragraph"><p><strong>Public</strong> : Plongeurs loisirs, apnéistes, plongeurs Tek et plongeurs
 professionnels</p></div>

Documentation/user-manual_fr.txt

@@ -61,7 +61,7 @@ problème, vous pouvez envoyer un e-mail sur
 mailto:subsurface@subsurface-divelog.org[notre liste de diffusion] et
 rapportez les bogues sur http://trac.hohndel.org[notre bugtracker].  Pour
 des instructions de compilation du logiciel et (si besoin) de ses
-dépendances, merci de consulter le fichier INSTALL inclus dans les sources
+dépendances, merci de consulter le fichier INSTALL.md inclus dans les sources
 logicielles.
 
 *Public* : Plongeurs loisirs, apnéistes, plongeurs Tek et plongeurs 

Documentation/user-manual_nl.html.git

@@ -516,7 +516,7 @@ het programma kunnen bij de ontwikkelaars gemeld worden via email op
 <a href="mailto:subsurface@subsurface-divelog.org">onze mailinglijst</a>. Fouten kunnen
 ook gemeld worden op <a href="https://github.com/Subsurface/subsurface/issues">onze bugtracker</a>.
 Instructies hoe <em>Subsurface</em> zelf te compileren vanuit de broncode staan ook op
-onze website en in het INSTALL bestand in de broncode.</p></div>
+onze website en in het INSTALL.md bestand in de broncode.</p></div>
 <div class="paragraph"><p><strong>Doelgroep</strong>: Recreatieve duikers, Tec duikers, Apneu duikers,
 Professionele duikers.</p></div>
 <div id="toc">

Documentation/user-manual_nl.txt

@@ -59,7 +59,7 @@ het programma kunnen bij de ontwikkelaars gemeld worden via email op
 mailto:subsurface@subsurface-divelog.org[onze mailinglijst]. Fouten kunnen
 ook gemeld worden op https://github.com/Subsurface/subsurface/issues[onze bugtracker].
 Instructies hoe _Subsurface_ zelf te compileren vanuit de broncode staan ook op
-onze website en in het INSTALL bestand in de broncode.
+onze website en in het INSTALL.md bestand in de broncode.
 
 *Doelgroep*: Recreatieve duikers, Tec duikers, Apneu duikers,
 Professionele duikers.

README.md

@@ -21,16 +21,9 @@ Report bugs and issues at https://github.com/Subsurface/subsurface/issues
 
 License: GPLv2
 
-We frequently make new test versions of Subsurface available at
+We are releasing 'nightly' builds of Subsurface that are built from the latest version of the code. Versions of this build for Windows, macOS, Android (requiring sideloading), and a Linux AppImage can be downloaded from the [Latest Dev Release](https://www.subsurface-divelog.org/latest-release/) page on [our website](https://www.subsurface-divelog.org/). Alternatively, they can be downloaded [directly from GitHub](https://github.com/subsurface/nightly-builds/releases). Additionally, those same versions are
-http://subsurface-divelog.org/downloads/test/ and there you can always get
-the latest builds for Mac, Windows, Linux AppImage and Android (with some
-caveats about installability). Additionally, those same versions are
 posted to the Subsurface-daily repos on Ubuntu Launchpad, Fedora COPR, and
-OpenSUSE OBS.
+OpenSUSE OBS, and released to [Snapcraft](https://snapcraft.io/subsurface) into the 'edge' channel of subsurface.
-
-These tend to contain the latest bug fixes and features, but also
-occasionally the latest bugs and issues. Please understand when using them
-that these are primarily intended for testing.
 
 You can get the sources to the latest development version from the git
 repository:
@@ -42,17 +35,11 @@ git clone https://github.com/Subsurface/subsurface.git
 You can also fork the repository and browse the sources at the same site,
 simply using https://github.com/Subsurface/subsurface
 
-If you want the latest release (instead of the bleeding edge
+Additionally, artifacts for Windows, macOS, Android, Linux AppImage, and iOS (simulator build) are generated for all open pull requests and linked in pull request comments. Use these if you want to test the changes in a specific pull request and provide feedback before it has been merged.
-development version) you can either get this via git or the release tar
-ball. After cloning run the following command:
 
-```
+If you want a more stable version that is a little bit more tested you can get this from the [Curent Release](https://www.subsurface-divelog.org/current-release/) page on [our website](https://www.subsurface-divelog.org/).
-git checkout v5.0.10  (or whatever the last release is)
-```
 
-or download a tarball from http://subsurface-divelog.org/downloads/Subsurface-5.0.10.tgz
+Detailed build instructions can be found in the [INSTALL.md](/INSTALL.md) file.
-
-Detailed build instructions can be found in the INSTALL file.
 
 ## System Requirements