Feat: add react-addons-test-utils to package.json

Author: RyanCCollins

package.json

@@ -72,6 +72,7 @@
     "immutable": "^3.7.5",
     "isomorphic-fetch": "^2.2.0",
     "json-loader": "^0.5.4",
+    "minimist": "^1.2.0",
     "node-sass": "^3.4.2",
     "react": "^15.1.0",
     "react-addons-css-transition-group": "^15.2.1",