Add platform-specific notes in README

README.md

@@ -36,3 +36,31 @@ fn main() {
     }
 }
 ```
+
+## Platform-specific notes
+
+### Android
+
+ - To compile the examples for android, initialize the submodules, go to `deps/apk-builder/apk-builder` and run `cargo build`, then go back to `gl-init` and call `ANDROID_HOME=/path/to/sdk NDK_HOME=/path/to/ndk NDK_STANDALONE=/path/to/standalone cargo test --no-run --target=arm-linux-androideabi`
+ - Events are not implemented
+
+### Emscripten
+
+ - Work will start when Emscripten gets updated to LLVM 3.5 (which should happen soon)
+
+### OS/X
+
+ - This library compiles for OS/X but calling any function will fail
+ - Some low-level issues related to Objective C bindings make the implementation difficult to write
+ - Looking for contributors
+
+### Win32
+
+ - Pixel formats are not implemented
+ - If you don't have MinGW installed, you will need to provide `libgdi32.a` and `libopengl32.a` ; you can put them in `C:\Users\you\.rust`
+
+### X11
+
+ - Some input events are not implemented
+ - Pixel formats not implemented
+ - The implementation probably needs a cleanup