Changed serializer functionality to return a JSON string
Added functionality for radio buttons, checkboxes, and select lists to the populator and validator classes
Added a class to apply errors to the form
Updated serializer class to handle all form element types (radio, checkbox, select, text)
Refactored serializer to handle all input types, but only one at a time. Refactored validation class to only return true of false. Encapsulated input types.
Fixed bug for checkbox population to allow for multiple values to be passed in. Will also work if checkbox values are not passed as an array.
Changed serialize function to return an object, not a JSON string
Added setup files for Travis CI
Added testem as a dependency in the node package.json file
Added node dependency for grunt-cli for Travis setup
Updated .travis.yml to install xvfb
Merge pull request #2 from MikeDanaher/master

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