Implemented Task (Issue #2)
Merged with WIP-alvin
Cleans out two remaining .swp-files from repo
Uses features/step_definitions/types.rb over tasks.rb for statement I have x TaskTypes/ExpenseTypes
Completed Issue #5 (Expense Model): MIGRATE YOUR DB

* Also changed references to Timetracker (original name for this app) to Aobotracker.
* Began using some configuration options (privileges, allowed expense statuses,
  etc.), which can be found in config/initializers
* Refactored and cleaned up some of the step definitions and transforms