Updated travis.yml
Mimicking Sinatra by overriding constructor with one that returns
a Rack::Builder complete with middlewares.

Makes it easier to test and treat bare rack app as a normal class
Extracted Request out of RackApp so I don't have to pass the Rack::Request object around everywhere

Also removed setting of @root_directory as it was only there for testing.
Stubbing Dir.pwd instead.
Moved Request to bottom of file
Some color
Improved test coverage
Refactored show function
Added Jasmine JS specs, major refactor of javascript
Use class variable
Duplicate array before popping dem thangs