Made changes to satisfy JSHint

[issue #71](https://github.com/guillaumepotier/Parsley.js/issues/71) suggested running the code through JSHint, which I did and made the appropriate changes.  I set some options for JSHint in .jshintrc so that your coding style could be preserved.

I used the CLI version of JSHint, installed via npm (npm install jshint -g).