add .ppm files, and demo.sh
Change window resolution, and add a handler of LG features(custom .ppm, .ppm path)
Compile a executable file
 Changes to be committed:
	new file:   .gitignore
	modified:   odroid_xu3/opengles30/samples/opengles_30/skybox_with_myahrs/Skybox_with_myahrs.cpp
	modified:   odroid_xu3/opengles30/samples/opengles_30/skybox_with_myahrs/skybox_myahrs