add makefile for linux os build
	modified:   .gitignore
	modified:   TODO.txt
	new file:   proj.html5/makefile
	new file:   samples/HelloGLES3/proj.html5/makefile
	new file:   samples/ModelView/proj.html5/makefile
	new file:   vendor/libPvr/proj.html5/makefile
	new file:   vendor/libTinyxml2/proj.html5/makefile