Merge pull request #123 from karma-runner/johnjbarton-travis-debug

chore(ci): echo travis state variables.

.travis.yml

@@ -23,6 +23,7 @@ addons:
       - g++-4.8
 
 after_success:
+  - echo "TRAVIS_BRANCH=$TRAVIS_BRANCH TRAVIS_EVENT_TYPE=$TRAVIS_EVENT_TYPE TRAVIS_NODE_VERSION=$TRAVIS_NODE_VERSION" 
   - if [[ "$TRAVIS_BRANCH" == "master" && "$TRAVIS_EVENT_TYPE" == "push" && "$TRAVIS_NODE_VERSION" == "stable" ]]; then
       semantic-release;
     fi;