GPII-994: Adding jshint and jsonlint tasks

Added grunt with jshint and jsonlint tasks. Also cleaned up all the files to pass linting.
Merge branch 'master' into GPII-994

Conflicts:
	README.md
	package.json
Merge pull request #82 from jobara/GPII-994

GPII-994: Adding jshint and jsonlint tasks