Add smoketests sanity check on deployment to Heroku

Author: noelmarkham

.gitignore

@@ -15,6 +15,7 @@ project/plugins/project/
 # ensime
 .ensime
 .ensime_cache/
+ensime.sbt
 
 # Scala-IDE specific
 .scala_dependencies

.travis.yml

@@ -26,6 +26,7 @@ after_success:
      echo "Deploying to Heroku";
      docker login --username=noel.m@47deg.com --password=$heroku_token registry.heroku.com;
      sbt dockerBuildAndPush;
+     sbt smoketests/test;
   fi
 - if [ "$TRAVIS_PULL_REQUEST" = "true" ]; then
      echo "Not in master branch, skipping deploy and release";