chore(package.json): use prepublishOnly
chore(package.json): use prepublishOnly

npm 4 is splitting the prepublish script into two new: prepare and prepublishOnly.  

* prepare will have the same behavior that prepublish has now. Commands in this script will run both before publishing and on npm install.
* prepublishOnly, as seen from its name, will run only before publishing the package.  

Also, prepublish will receive a warning about the changes.
securingsincity/react-ace,securingsincity/react-ace,securingsincity/react-ace