Update "grunt-contrib-jshint".
Gruntfile.js: Remove unneeded relative paths.
Merge pull request #58 from XhmikosR/jshint

Update grunt-contrib-jshint
Remove unneeded main property and keywords from package.json.
Use the standard `license` property.
Explicitly set the files to install.
Use tilde versions for dependencies.

Conflicts:
	package.json