updated samples for glfw3 fullscreen
checked constants exposed for WebCL 1.0
still allow buffer mapping
compliance with extensions (need further testing), especially gl_sharing
added getGLObjectInfo()
updated finish() to support a callback when completed
added createKernelsInProgram()
added enqueueWaitForEvents()
fixed clWaitForEvents() with callbacks
aligned with CL spec
corrected/tested for AMD APP SDK on Windows
updated samples & tests
code cleanup for Mac/Linux
Merge branch 'feature/align_to_webcl_1.0.0_spec' into develop
updated version to v0.8.2 and dependency on node-glfw v0.4.2, node-image 0.7.2