Add Opps CMS on CMS section
Removing some trailing whitespace
Merge remote-tracking branch 'ellisonleao/patch-1'

Conflicts:
	README.md

solved
add ipdb to Debugging Tools section
Add Game Development section
Add pyglet on GUI section
ok, remove the gif
Merge branch 'master' into patch-2
Merge pull request #8 from ellisonleao/patch-2

Add game development section and pyglet to GUI section