osx: add support for CFLAGS and LDFLAGS
addons: support for absoulte paths and paths that already include OF_ROOT
addons: ignore commented lines in addons.make
fix some warnings + fix xcode project
Fix VS project (removed ofAppNoWindow)
Merge pull request #43 from ngbrown/master

Fix VS project (removed ofAppNoWindow)
Merge branch 'master' of https://github.com/ofZach/projectGeneratorSimple into feature-codelite-linux