test(ci): Adding test-ci to prepublish hoook (#198)

Author: caitlinrubin-optimizely

packages/optimizely-sdk/package.json

@@ -14,7 +14,7 @@
     "lint": "eslint lib/**",
     "cover": "istanbul cover _mocha ./lib/*.tests.js ./lib/**/*.tests.js ./lib/**/**/*tests.js",
     "coveralls": "npm run cover -- --report lcovonly && cat ./coverage/lcov.info | coveralls",
-    "prepublishOnly": "npm run build-browser-umd && npm test && npm run test-xbrowser"
+    "prepublishOnly": "npm run build-browser-umd && npm test && npm run test-xbrowser && npm run test-umdbrowser"
   },
   "repository": {
     "type": "git",