Updated boards.find method so mocha tests pass.

* Because allBoards was being used behind the scenes for board.find
  there was no error being returned when a missing key was provided to
  board.find
Fixing travis settings and added travis badge to readme.
Fixed typo in repo name
Bug fix for created_at in db models
Added simple benchmark for post, thread, and board creation
Refactor point.
Refactoring models to model/index.js
Seed now relies on core import instead of singular models.
Dependencies working.
Fixed tests.
Refactored Boards with Promises

Refactored all of boards, validation and tests included, to use
promises.