Fixes/Implements #204: Return non-zero error code on error
changed CamelCase to under_score to conform to style
Merge branch 'master' of https://github.com/linuxlefty/geeknote

Fixes/Implements #204: Return non-zero error code on error
https://github.com/VitaliyRodnenko/geeknote/issues/204

Conflicts:
	geeknote/editor.py
	geeknote/geeknote.py
	geeknote/oauth.py
	geeknote/tools.py