Remove Readme.txt, replace with README.md (which contains the former).

Makefile

@@ -317,7 +317,7 @@ install: all
 	$(INSTALL) -d "$(DESTDIR)$(BINDIR)"
 	$(INSTALL) -c -m 755 "$(srcdir)/stella$(EXEEXT)" "$(DESTDIR)$(BINDIR)/stella$(EXEEXT)"
 	$(INSTALL) -d "$(DESTDIR)$(DOCDIR)"
-	$(INSTALL) -c -m 644 "$(srcdir)/Announce.txt" "$(srcdir)/Changes.txt" "$(srcdir)/Copyright.txt" "$(srcdir)/License.txt" "$(srcdir)/README-SDL.txt" "$(srcdir)/Readme.txt" "$(srcdir)/Todo.txt" "$(srcdir)/docs/index.html" "$(srcdir)/docs/debugger.html" "$(DESTDIR)$(DOCDIR)/"
+	$(INSTALL) -c -m 644 "$(srcdir)/Announce.txt" "$(srcdir)/Changes.txt" "$(srcdir)/Copyright.txt" "$(srcdir)/License.txt" "$(srcdir)/README-SDL.txt" "$(srcdir)/README.md" "$(srcdir)/Todo.txt" "$(srcdir)/docs/index.html" "$(srcdir)/docs/debugger.html" "$(DESTDIR)$(DOCDIR)/"
 	$(INSTALL) -d "$(DESTDIR)$(DOCDIR)/graphics"
 	$(INSTALL) -c -m 644 $(wildcard $(srcdir)/docs/graphics/*.png) "$(DESTDIR)$(DOCDIR)/graphics"
 	$(INSTALL) -d "$(DESTDIR)$(DATADIR)/applications"

Readme.txt

@@ -1,10 +0,0 @@
-Stella is a multi-platform Atari 2600 VCS emulator which allows you to
-play all of your favourite Atari 2600 games on your PC.  You'll find the
-Stella Users Manual in the docs subdirectory.  If you'd like to verify
-that you have the latest release of Stella, visit the Stella Website at:
-
-  https://stella-emu.github.io
-
-Enjoy,
-
-The Stella Team

debian/docs

@@ -2,7 +2,7 @@ Announce.txt
 Changes.txt
 Copyright.txt
 README-SDL.txt
-Readme.txt
+README.md
 docs/*.html
 docs/graphics/*.png
 Todo.txt

src/os/macos/Create_build.sh

@@ -23,7 +23,7 @@ echo "Mounting ${DMG} file ..."
 hdiutil attach "${DMG}"
 
 echo "Copying documentation ..."
-ditto ../../Announce.txt ../../Changes.txt ../../Copyright.txt ../../License.txt ../../Readme.txt ../../Todo.txt "${DISK}"
+ditto ../../Announce.txt ../../Changes.txt ../../Copyright.txt ../../License.txt ../../README.md ../../Todo.txt "${DISK}"
 
 echo "Copying application ..."
 cp -r DerivedData/Build/Products/Release/Stella.app "${DISK}"

src/os/windows/Create_Builds.bat

@@ -102,7 +102,7 @@ copy ..\..\..\Announce.txt   %STELLA_DIR%\docs
 copy ..\..\..\Changes.txt    %STELLA_DIR%\docs
 copy ..\..\..\Copyright.txt  %STELLA_DIR%\docs
 copy ..\..\..\License.txt    %STELLA_DIR%\docs
-copy ..\..\..\Readme.txt     %STELLA_DIR%\docs
+copy ..\..\..\Readme.md     %STELLA_DIR%\docs
 copy ..\..\..\README-SDL.txt %STELLA_DIR%\docs
 copy ..\..\..\Todo.txt       %STELLA_DIR%\docs
 if %HAVE_FLIP% == 1 (