Moved error.js
Common error.js for both Vellore and Chennai APIs
Implemented Chennai API
However, Current Semester data is not present, uses Winter Semester data
Marks is down on their website, can't do anything about it
TODO, routes for Chennai API

Minor changes in Vellore Login API
Moved Token Resource to a common location for Vellore and Chennai
Moved Sample Data to a common location for Vellore and Chennai
Chennai API is complete
However, Current Semester data is not present, uses Winter Semester 2014 data
And Marks is down on their website, can't do anything about it