Initial commit
Adding a home page and loading bootstrap 3
Scaffold the challenge entity
Adding a basic navigation bar

Currently contains a link to the challenges index and a placeholder
for a link to a yet to be created about page.

Cleaned up the home page to due to new links in the navbar.  Also
removed a dummy icon that served no purpose.
Adding User / Authentication

Created a User model and added authentication via devise.  The user
model is incomplete and was constructed with the minimum requirements
for devise authentication to work.

We need to add additional fields to the user model to achieve the application
goals such as points.
Scaffolding for about page
adding MIT license
Removing README.rdoc
Adding README.md