Catalan: added new translation

Update the translations section with a new translation that is in development.

Author: fpmweb

README.md

@@ -1539,6 +1539,7 @@
   - :fr: **French**: [nmussy/javascript-style-guide](https://github.com/nmussy/javascript-style-guide)
   - :ru: **Russian**: [uprock/javascript](https://github.com/uprock/javascript)
   - :bg: **Bulgarian**: [borislavvv/javascript](https://github.com/borislavvv/javascript)
+  - ![ScreenShot](https://raw.githubusercontent.com/fpmweb/javascript-style-guide/master/img/catala.png) **Catalan**: [fpmweb/javascript-style-guide](https://github.com/fpmweb/javascript-style-guide)
 
 ## The JavaScript Style Guide Guide