Updating README.

Author: clems71

README.md

@@ -7,13 +7,31 @@ In C++, you often need to create a data layer that supports introspection, seria
   - access by name while still **type-safe**
   - introspection
   - JSON serialization, easily extendable to other formats
-  
+
 
 Planned features
 ----------------
   - Data migration support (versionning, update, ...)
   - More serialization formats
 
+
+Supported platforms
+-------------------
+  - Mac OS X - Clang 3.5+
+  - Linux - Clang 3.5+
+  - Linux - G++ 4.9+
+  - Windows - MSYS2 MINGW 4.9+
+  - *Windows - MSVC 2015 to be tested*
+
+
+UNIX Build
+----------
+    mkdir build
+    cd build
+    cmake -DCMAKE_BUILD_TYPE=Release ..
+    make && ctest
+
+
 Declare a new data type
 -----------------------
     #include <data.h>