Setup automated deploys

This commit sets up automated deploys using Travis.

The inspiration for many of these changes came from the [Micropurchase app's config](https://github.com/18F/micropurchase/blob/develop/.travis.yml).

To enable automated deploys, this commit does the following:

- Add a deploy script that takes an environment as an argument and deploys to the appropriate app on cloud.gov
- Modify the Travis configuration to add the keys that travis needs to deploy to cloud.gov

closes #204

.travis.yml

@@ -4,10 +4,24 @@ before_script:
 bundler_args: "--deployment --jobs=3 --retry=3 --without development"
 cache: bundler
 env:
-- DB=postgresql
+  global:
+  - DB=postgresql
+  - CF_USERNAME=18f-dolores-deployer
+  - secure: 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
 language: ruby
 rvm:
 - ruby-2.3.1
 sudo: false
 script:
 - bundle exec rake
+deploy:
+- provider: script
+  script: "./bin/deploy.sh staging"
+  skip_cleanup: true
+  on:
+    branch: develop
+- provider: script
+  script: "./bin/deploy.sh production"
+  skip_cleanup: true
+  on:
+    branch: master

bin/deploy.sh

@@ -0,0 +1,18 @@
+set -e
+
+API="https://api.cloud.gov"
+ORG="18f"
+SPACE="dolores"
+ENVIRONMENT=$1
+
+if [ $ENVIRONMENT = 'production' ]; then
+  NAME="dolores-app"
+elif [ $ENVIRONMENT = 'staging' ]; then
+  NAME="dolores-staging"
+else
+  echo "Unknown environment: $ENVIRONMENT"
+  exit
+fi
+
+cf login --a $API --u $CF_USERNAME --p $CF_PASSWORD --o $ORG -s $SPACE
+cf push $NAME