setup travis ci testing
run migrations by default so TravisCI testing env runs migrations
TravisCI run => https://travis-ci.org/think602/spree_braintree_cse/builds/28183955
add braintree as a dependency since it's an undefined model with the gem
load the entire spree env in the gem file so we have it for dev/testing
create a simple setter test for Spree::CreditCard#number=
Merge pull request #5 from think602/master

setup travis CI testing