fix typos in README
- fix GLUT/OpenGL include paths for the tools
- fix the build with Clang 3.3 and libcxx (LLVM)
-Fixed some incorrect assumptions about PRT files:
* Now using stored header sizes (since newer PRT versions might add fields)
* Now not assuming channels are stored contiguously in memory (using 'offset' value instead)
Merge pull request #37 from nikai3d/patch-1

fix typos in README
Merge pull request #35 from SteffenL/master

ZIP: Fixed memory corruption when reading file header
-Reverted whitespace changes
Merge pull request #39 from darcyha/master

PRT file format fixes
Merge pull request #38 from marcusva/master

- fix GLUT/OpenGL include paths for the tools
Merge pull request #36 from jamesvecore/master

Various fixes for .bin reading and saving
Fix threading bug and initializing bug
Merge branch 'master-wdas' into redpawfx

Conflicts:
	CMakeLists.txt
	README
	src/lib/core/KdTree.h
	src/lib/io/PRT.cpp - not applied, was causing  loading infinite loops of some kind.
	src/lib/io/ParticleIO.cpp