Update Streetcars; Ruby 2.1.3

This PR is a combination of four commits:
 - Upgrade to Ruby 2.1.3
 - Convert to Ruby 2 hash syntax
 - Update gemfile source (and hash syntax)
 - Add King streetcar and make streetcar map formatting less assy

![screenshot 2014-09-30 20 28 49](https://cloud.githubusercontent.com/assets/646108/4468670/f4b589e6-4901-11e4-9564-5ad2c0fe9740.png)