docs: Moved CREDITS and INSTALL to markdown format.

CREDITS.md

@@ -0,0 +1,34 @@
+# Simple DirectMedia Layer CREDITS
+
+Thanks to everyone who made this possible, including:
+
+- Cliff Matthews, for giving me a reason to start this project. :)  -- Executor rocks!  *grin*
+- Ryan Gordon for helping everybody out and keeping the dream alive. :)
+- Gabriel Jacobo for his work on the Android port and generally helping out all around.
+- Philipp Wiesemann for his attention to detail reviewing the entire SDL code base and proposes patches.
+- Andreas Schiffler for his dedication to unit tests, Visual Studio projects, and managing the Google Summer of Code.
+- Mike Sartain for incorporating SDL into Team Fortress 2 and cheering me on at Valve.
+- Alfred Reynolds for the game controller API and general (in)sanity
+- Jørgen Tjernø¸ for numerous magical macOS fixes.
+- Pierre-Loup Griffais for his deep knowledge of OpenGL drivers.
+- Julian Winter for the SDL 2.0 website.
+- Sheena Smith for many months of great work on the SDL wiki creating the API documentation and style guides.
+- Paul Hunkin for his port of SDL to Android during the Google Summer of Code 2010.
+- Eli Gottlieb for his work on shaped windows during the Google Summer of Code 2010.
+- Jim Grandpre for his work on multi-touch and gesture recognition during
+  the Google Summer of Code 2010.
+- Edgar "bobbens" Simo for his force feedback API development during the
+  Google Summer of Code 2008.
+- Aaron Wishnick for his work on audio resampling and pitch shifting during
+  the Google Summer of Code 2008.
+- Holmes Futrell for his port of SDL to the iPhone and iPod Touch during the
+  Google Summer of Code 2008.
+- Jon Atkins for SDL_image, SDL_mixer and SDL_net documentation.
+- Everybody at Loki Software, Inc. for their great contributions!
+
+ And a big hand to everyone else who has contributed over the years.
+
+THANKS! :)
+
+    -- Sam Lantinga <slouken@libsdl.org>
+

CREDITS.txt

@@ -1,53 +0,0 @@
-
-Simple DirectMedia Layer CREDITS
-Thanks to everyone who made this possible, including:
-
-* Cliff Matthews, for giving me a reason to start this project. :)
- -- Executor rocks!  *grin*
-
-* Ryan Gordon for helping everybody out and keeping the dream alive. :)
-
-* Gabriel Jacobo for his work on the Android port and generally helping out all around.
- 
-* Philipp Wiesemann for his attention to detail reviewing the entire SDL code base and proposes patches.
-
-* Andreas Schiffler for his dedication to unit tests, Visual Studio projects, and managing the Google Summer of Code.
-
-* Mike Sartain for incorporating SDL into Team Fortress 2 and cheering me on at Valve.
-
-* Alfred Reynolds for the game controller API and general (in)sanity
-
-* Jørgen Tjernø for numerous magical macOS fixes.
-
-* Pierre-Loup Griffais for his deep knowledge of OpenGL drivers.
- 
-* Julian Winter for the SDL 2.0 website.
-
-* Sheena Smith for many months of great work on the SDL wiki creating the API documentation and style guides.
-
-* Paul Hunkin for his port of SDL to Android during the Google Summer of Code 2010.
-
-* Eli Gottlieb for his work on shaped windows during the Google Summer of Code 2010.
-
-* Jim Grandpre for his work on multi-touch and gesture recognition during
-  the Google Summer of Code 2010.
-
-* Edgar "bobbens" Simo for his force feedback API development during the
-  Google Summer of Code 2008.
-
-* Aaron Wishnick for his work on audio resampling and pitch shifting during
-  the Google Summer of Code 2008.
-
-* Holmes Futrell for his port of SDL to the iPhone and iPod Touch during the
-  Google Summer of Code 2008.
-
-* Jon Atkins for SDL_image, SDL_mixer and SDL_net documentation.
-
-* Everybody at Loki Software, Inc. for their great contributions!
-
- And a big hand to everyone else who has contributed over the years.
-
-THANKS! :)
-
-  -- Sam Lantinga			<slouken@libsdl.org>
-

INSTALL.md

@@ -0,0 +1,64 @@
+# To compile and install SDL:
+
+##  Windows with Visual Studio:
+
+Read ./docs/README-visualc.md
+
+## Windows building with mingw-w64 for x86:
+
+Run: `cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=build-scripts/cmake-toolchain-mingw64-i686.cmake && cmake --build build && cmake --install build`
+
+## Windows building with mingw-w64 for x64:
+
+Run: `cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=build-scripts/cmake-toolchain-mingw64-x86_64.cmake && cmake --build build && cmake --install build`
+
+## macOS with Xcode:
+
+Read docs/README-macos.md
+
+## macOS from the command line:
+
+Run: `cmake -S . -B build && cmake --build build && cmake --install build`
+
+## Linux and other UNIX systems:
+
+Run: `cmake -S . -B build && cmake --build build && cmake --install build`
+
+## Android:
+
+Read docs/README-android.md
+
+## iOS:
+
+Read docs/README-ios.md
+
+## Using CMake:
+
+Read docs/README-cmake.md
+
+# Example code
+
+Look at the example programs in ./test, and check out the online
+documentation at https://wiki.libsdl.org/SDL3/
+
+# Discussion
+
+## Forums/mailing lists
+
+Join the SDL developer discussions, sign up on
+
+https://discourse.libsdl.org/
+
+and go to the development forum
+
+https://discourse.libsdl.org/c/sdl-development/6
+
+Once you sign up, you can use the forum through the website, or as a mailing
+list from your email client.
+
+## Announcement list
+
+Sign up for the announcement list through the web interface:
+
+https://www.libsdl.org/mailing-list.php
+

INSTALL.txt

@@ -1,43 +0,0 @@
-
-To compile and install SDL:
-
-    1.  Windows with Visual Studio:
-        * Read ./docs/README-visualc.md
-
-        Windows building with mingw-w64 for x86:
-        * Run: cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=build-scripts/cmake-toolchain-mingw64-i686.cmake && cmake --build build && cmake --install build
-
-        Windows building with mingw-w64 for x64:
-        * Run: cmake -S . -B build -DCMAKE_TOOLCHAIN_FILE=build-scripts/cmake-toolchain-mingw64-x86_64.cmake && cmake --build build && cmake --install build
-
-        macOS with Xcode:
-        * Read docs/README-macos.md
-
-        macOS from the command line:
-        * Run: cmake -S . -B build && cmake --build build && cmake --install build
-
-        Linux and other UNIX systems:
-        * Run: cmake -S . -B build && cmake --build build && cmake --install build
-
-        Android:
-        * Read docs/README-android.md
-
-        iOS:
-        * Read docs/README-ios.md
-
-        Using Cmake:
-        * Read docs/README-cmake.md
-
-    2.  Look at the example programs in ./test, and check out the online
-        documentation at https://wiki.libsdl.org/
-
-    3.  Join the SDL developer discussions, sign up on 
-        https://discourse.libsdl.org/
-        and go to the development forum
-        https://discourse.libsdl.org/c/sdl-development/6
-
-    4.  Sign up for the announcement list through the web interface:
-        https://www.libsdl.org/mailing-list.php
-
-That's it!
-Sam Lantinga <slouken@libsdl.org>