Automatic test, build and push from travis

travis.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+# Bash version should >= 4 to be able to run this script.
+
+if [ -z "$TRAVIS_TAG" ]; then
+    echo "UNIT TEST ONLY"
+    bash release.sh test all all 0.1
+else
+    echo "Log in to docker hub"
+    docker login -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD"
+    echo "RUN UNIT TEST, BUILD DOCKER IMAGES AND PUSH THOSE TO DOCKER HUB"
+    bash release.sh all all all $TRAVIS_TAG
+    echo "Log out of docker hub"
+    docker logout
+fi