Enable greenkeeper-lockfile (#1531)

* Enable `greenkeeper-lockfile`

* Change colon to dash

* Fix command path

* Add SSH key

.circleci/config.yml

@@ -62,6 +62,21 @@ jobs:
           paths:
             - node_modules
 
+      - add_ssh_keys:
+          fingerprints:
+            - "e1:ac:13:98:98:8b:fd:38:81:12:28:55:75:a1:da:73"
+      - run:
+          name: Test SSH key
+          command: |
+              if [[ $CIRCLE_BRANCH == "master" ]]; then
+                ssh -T git@github.com
+              fi
+      - run:
+          name: Greenkeeper - update and commit yarn.lock
+          command: |
+              ./node_modules/.bin/greenkeeper-lockfile-update
+              ./node_modules/.bin/greenkeeper-lockfile-upload
+
       - run:
           name: Run tests
           command: yarn test --coverage