fix unix project config: provide cmake GLOW_HOME in find script
fix cmake for unix build
fix cmake
move template specializations to cpp
add bool uniform specialization
Merge branch 'master' into native_gl_context_15

Conflicts:
	CMakeLists.txt
	FindGLOW.cmake
	include/glow/Uniform.h
ref #15 revisit and add key event handling (again)