.travis.yml: Push to repo after success.

.travis.yml

@@ -3,6 +3,7 @@ services:
   - docker 
 
 language: go
+
 go:
  - 1.4.3
  - 1.5.2
@@ -19,5 +20,8 @@ script:
  - docker run -d -p 127.0.0.1:15432:5432 quay.io/ericchiang/postgres
  - ./test
 
+after_success:
+  - if [[ "$TRAVIS_GO_VERSION" == "1.5.2" && "$TRAVIS_PULL_REQUEST" == "false" && "$TRAVIS_BRANCH" == "master"  ]]; then ./build-docker-push ;fi
+
 notifications:
   email: false