Adding Travis-CI builds to deploy the demo site

.travis.yml

@@ -0,0 +1,30 @@
+branches:
+  only:
+  - master
+
+language: bash
+
+services:
+  - docker
+
+before_install:
+  - sudo pip install --upgrade pip
+  - pip install --user awscli
+  - export PATH=$PATH:$HOME/.local/bin
+  - echo $DOCKER_PASSWORD | docker login -u "$DOCKER_USERNAME" --password-stdin 
+
+install:
+  - if [ "$TRAVIS_BRANCH" == "master" ]; then
+    docker build --no-cache -t databio/caravel:latest . || exit 1;
+    docker push databio/caravel:latest || exit 1;
+    aws sqs send-message --queue-url 'https://queue.amazonaws.com/474683445819/dcos-refresh' --message-body 'shefflab/caravel' || exit 1;
+    fi
+
+notifications:
+  email:
+    on_success: change
+    on_failure: always
+    recipients:
+    - nem2p@virginia.edu
+    - nsheffield@virginia.edu
+    - mjs5kd@virginia.edu