Added Travis CI info to docs

ChangeLog.md

 
 ## OpenRaider (0.1.3) xythobuz <xythobuz@xythobuz.de>
 
+    [ 20140705 ]
+    * Added basic Travis CI support (Linux + clang only)
+
     [ 20140704 ]
     * Removed unnecessary #include dependencies
     * Removed vecX_t typedefs

README.md

 
 It seems as if OpenRaider will currently only work on Little-Endian platforms. This is not nice and will hopefully be fixed in the future!
 
+[![Build Status](https://travis-ci.org/xythobuz/OpenRaider.svg?branch=master)](https://travis-ci.org/xythobuz/OpenRaider)
+
 [![Flattr this git repo](http://api.flattr.com/button/flattr-badge-large.png)](https://flattr.com/submit/auto?user_id=xythobuz&url=https://github.com/xythobuz/OpenRaider&title=OpenRaider&language=&tags=github&category=software)
 
 ## Configuration

TODO.md

     * Need useful, always available image writer alternative for screenshots then
 * When cutscene rendering is working, use TR4/5 style menu?
 
+# Travis CI
+
+* Currently only building on Linux with clang, SDL, SDL_TTF, ALUT and PNG
+* Should also build with gcc, but needs newer gcc (4.8) with C++11 support
+* Should also build on Mac, but needs different before_install / install scripts,
+  that can detect the platform they’re running on
+