Clean up deprecated jscs rules

Looks like the new rules have been added already. So just mostly remove
the deprecated rules. And for some, use the new names.

For the latest grunt-jscs version 0.7.1. Related to Jira ticket
CSOPS-556.
Updated grunt-jscs-checker to grunt-jscs in readme.
Bumped version number, added .gitignore
Merge pull request #33 from mobify/deprecated-rules

Clean up deprecated jscs rules