Merge pull request #5 from appcelerator-modules/master

[MOD-1491] Updating Stable branch from Master
Create .travis.yml
Update README.md
Move to relative paths and update to 2.1.3.GA
Install 3.1.3.GA
Use simplified travis script
Merge branch 'master' of github.com:appcelerator-modules/ti.storekit into TIMOB-17928
[TIMOB-17928] Updated travis.yml