Merge pull request #16 from OliverUv/cleanup

Cleanup
Merge pull request #17 from OliverUv/ogl3-bloom

OpenGL3 support for ofxBloom.h
Template method pattern for injecting uniforms
Fill backbuffer with tex0 texture on first pass.
ofBlur.h with backbuffer and injectUniforms
Change to english apostrophes in README.md
Clean up language in README.md