Travis 1: Spec for new travis_github_deployer.yml

- test new input
- add stub for preparing files to purge
Why not? If I type this on irb (you know about irb, right?):
2.1.0 :002 > a = [ 1 ]
 => [1] 
2.1.0 :003 > b = [ 2 ]
 => [2] 
2.1.0 :004 > a += b
 => [1, 2]