.travis.yml in sshkit-1.18.2 vs .travis.yml in sshkit-1.19.0

@@ -4,9 +4,12 @@
   - 2.4
   - 2.3
   - 2.2
   - 2.1
   - 2.0
+branches:
+  only:
+  - master
 matrix:
   include:
     # Run Danger only once, on 2.5
     - rvm: 2.5
       script: bundle exec danger