Added ftrapv switch

CMakeLists.txt

     set (WARNINGS "${WARNINGS} -Wno-disabled-macro-expansion")
     set (WARNINGS "${WARNINGS} -Wno-shorten-64-to-32 -Wno-sign-conversion")
     set (OpenRaider_CXX_FLAGS "${OpenRaider_CXX_FLAGS} -std=c++11")
-    set (OpenRaider_CXX_FLAGS_DEBUG "${OpenRaider_CXX_FLAGS_DEBUG} -g -O0")
+    set (OpenRaider_CXX_FLAGS_DEBUG "${OpenRaider_CXX_FLAGS_DEBUG} -g -O0 -ftrapv")
     set (OpenRaider_CXX_FLAGS_RELEASE "${OpenRaider_CXX_FLAGS_RELEASE} -O2 -fomit-frame-pointer")
     set (OpenRaider_CXX_FLAGS_RELEASE "${OpenRaider_CXX_FLAGS_RELEASE} -ffast-math -funroll-loops")
 elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
     set (WARNINGS "${WARNINGS} -Wall -Wextra -Wpedantic")
     set (OpenRaider_CXX_FLAGS "${OpenRaider_CXX_FLAGS} -std=c++11")
-    set (OpenRaider_CXX_FLAGS_DEBUG "${OpenRaider_CXX_FLAGS_DEBUG} -g -O0")
+    set (OpenRaider_CXX_FLAGS_DEBUG "${OpenRaider_CXX_FLAGS_DEBUG} -g -O0 -ftrapv")
     set (OpenRaider_CXX_FLAGS_RELEASE "${OpenRaider_CXX_FLAGS_RELEASE} -O2 -fomit-frame-pointer")
     set (OpenRaider_CXX_FLAGS_RELEASE "${OpenRaider_CXX_FLAGS_RELEASE} -ffast-math -funroll-loops")
 elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")

README.md

 * zlib
 * cmake as build system
 * libpng (optional)
+* C++11 compiler
 
 On Mac OS X 10.9 with [XCode](https://developer.apple.com/xcode/) and [MacPorts](http://www.macports.org) installed, the following should be enough to get all dependencies that are available as port:
 

src/FontTRLE.cpp

 }
 
 int FontTRLE::initialize() {
-    //! \todo Font coloring not working when .pc has color?!?!
-
     assert(mFontInit == false);
     assert(mFontName != NULL);
     assert(mFontName[0] != '\0');