Add Greenkeeper and Coveralls dependencies

Author: ryanhefner

package-lock.json

@@ -63,8 +63,10 @@
     "babel-plugin-transform-react-remove-prop-types": "^0.4.13",
     "babel-preset-env": "^1.6.1",
     "babel-preset-react": "^6.24.1",
+    "coveralls": "^3.0.0",
     "enzyme": "^3.3.0",
     "enzyme-adapter-react-16": "^1.1.1",
+    "greenkeeper-lockfile": "^1.14.0",
     "gzip-size": "^4.1.0",
     "jest": "^22.4.3",
     "jest-enzyme": "^6.0.0",