Add .travis.yml file
Specify postgres version in travis yaml
Store gravatar in database. Closes #42

Squashed commit of the following:

commit 13fca0397a746cb5466ecb46ea79dc494837a7fb
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 17:05:11 2014 -0500

    all passing

commit 8138dcdccc31d9696de4d827f2606ee8a0637369
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 17:04:17 2014 -0500

    vcr added, 1 test still failing

commit def516c9383a526d5c4762b9f2aa3eb01606958c
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:55:56 2014 -0500

    refactored repeated lines into before block

commit fb6277a01756c977db392ebc9136df97d639d9d6
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:54:54 2014 -0500

    getting user info in SessionsController#create instead of name in User#create_with_omniauth

commit bbea2006f26de5c8ef9996a8ba13732037f00e37
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:23:55 2014 -0500

    updated sessions_controller_spec to have user gravatar and verified

commit f8bc1afdd2b9005b17d7311c525deee00da47621
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:10:19 2014 -0500

    added gravatar_id to user creation, now passing all tests

commit 2d56e4c314e0f50a12f63a66fa49b0c243a6e617
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:08:11 2014 -0500

    add gravatar id to update_user_spec, now failing 2 tests

commit 411b1891fee921a98d337439af597dd38c094607
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:03:11 2014 -0500

    added gravatar id to get_user_spec, now 1 failing test

commit 18d5f8d716175bde4c074e07366801d8ffe4298f
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 16:02:47 2014 -0500

    added gravatar id to class_group_controller_spec

commit 39e52cde15fdb823f9ea4f9efebfec75d3f6c99b
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 15:54:22 2014 -0500

    updated before block in spec for user controller

commit 57503c21d95669745f5e3d8c5322838865b7f0d7
Author: Catherine O'Neill <cathzozo@gmail.com>
Date:   Fri Sep 12 15:29:20 2014 -0500

    added gravatar column to user table in db
removed destroy method
Add travis ci slack integration
removed duplicated line in routes, and triple nested responses, questions, question sets
Angular properly displays an added question set.
Finished Create Read and Delete for Question Sets. All of the CRUD functions on the class_groups show page.
Fixed whitespace issues and removed comments
added question_controller_spec.rb file
skeleton of question controller spec
created before instances for question controller spec
passing get index and get show tests
fixed merge conflicts