Merge pull request #252 from LearnToBeFoundation/neeraj

changed something else to make sure hostbbb doesn't exceed cpu but I thi...
added in a certifications method so that I can pull up what each tutor is certified in via User.find(1).certifications
moving methods around in user.rb. no big change.
creating new tutors resource so that we can tutor specific controller requests
created the tutors controller and the necessary routes
I got the search to work for tutors who are available for given certifications and a day of the week and a start time and end time