Usability issue; it's not clear what 'language name' should be

[mmulich]

The help for the -l and --language message isn't clear.

$ codestyle -l python pkg
/Users/pumazi/.environments/cnx/bin/codestyle: Unsupported language: python
Supported extensions: .php, .css, .js, .less, .html, .py

Ok, so as a result of this, I'm thinking... should I use .py as the language value?

$ codestyle -l .py pkg
/Users/pumazi/.environments/cnx/bin/codestyle: Unsupported language: .py
Supported extensions: .php, .css, .js, .less, .html, .py

Then trying py seems to work, but it's still telling me about not having jscs installed?

$ codestyle -l py pkg
Checking external dependencies....
jscs is not installed

Just thought I'd take the time to give some usuability feedback. Hopefully it's helpful. 😄

[selevit]

Thanks for your feedback, pumazi!
What's about the new pull request? :-)