Merge tag '0.4.0' into develop

0.4.0
Starting 0.5.0
Merge tag '0.4.1' into develop

0.4.1

Conflicts:
	bower.json
	package.json
Merge tag '0.4.2' into develop

0.4.2

Conflicts:
	bower.json
	package.json
Merge tag '0.4.3' into develop

0.4.3

Conflicts:
	bower.json
	package.json
Add specific options including version and help.
Add devDependencies command.
Fix bug in argv processing. Edit History and Readme.
Merge branch 'release/0.5.0'