Squashed 'vendor/src/github.com/openshift/docker-source-to-images/' changes from cdf5c23..f94446d

f94446d Merge pull request #58 from bparees/readme2
676f8e4 fix bulleting on readme
b25fd6a Merge pull request #57 from bparees/readme
2c785ed additional readme cleanup
4dd441d Update README
9efcdcc Merge pull request #55 from bparees/relocate_scripts
1b0f487 change scripts dir to .sti/bin
eea4bf3 Merge pull request #54 from mfojtik/fix_go_panic
2a6e1fa Print usage instead of Go panic for 'sti build' command
599d9ed Merge pull request #52 from bparees/remote_scripts
4c73dbd allow assemble/run scripts to be supplied in app source or via remote url

git-subtree-dir: vendor/src/github.com/openshift/docker-source-to-images
git-subtree-split: f94446d3fd8a49606c574644d1196eed0a050490
Merge commit 'e541ce79d7b1bc533edf1cef0c949acb24cb2910'

enables external script support in STI
Merge pull request #119 from bparees/master

Update STI with external script changes