Update README, add travis badge.
Update README, add travis badge.

(cherry picked from commit 10954672ed4e05a3a563b60a38fc158d59a063ed)
Signed-off-by: Andy O'Neill <e3579b1e47f273529f0f929453e939a68ede9fd1@potatoriot.com>

harrystech/rails-pipeline,harrystech/rails-pipeline,harrystech/rails-pipeline