added .travis.yml for CI builds
Added trip itinerary item REST API and basic unit tests.
Added Travis-CI status to README
Increased the threshold for "slow" to be 5sec
Took code from Will's branch to fix Travis failure
squash express logs during tests
load a trip directly into the request...

... when :tripid is in the url
new GET /trips/:tripid and test more thoroughly
refactored and tested DELETE trips/:trip_id
refactor and test update and create trips
minor
testing trip index
testing update trips
added top-level describe block
renamed trip controller test file appropriately

we will have a trip test file too
added top-level describe block for home controller tests
renamed home controller test file appropriately.
bump up test timeout for travis
added mongo for travis
added trip "archived" flag and updated trip index

to not show archived trips