chore(): updating contribution guidline

Author: olivier-lxo

CONTRIBUTING.md

@@ -26,7 +26,9 @@ And so on. The commits are then compiled into the changelog along with each rele
 For any contributors with release rights:
 
 1. update package.json with new version bump. Refer to [semver](http://semver.org/) for versioning guidelines
-2. run `npm publish` to publish new version (the command wil create new build files)
+2. run `npm prepublish` to prepare the new version (the command will create new build files)
 3. commit package.json and build files
 4. tag commit with newest version
+5. push changes to Github
+5. run `npm publish` to publish the new version to npmjs.com
 5. use Github UI to create a new release