Update README.md

Author: JosephMcArthur

README.md

@@ -3,12 +3,18 @@ Open Access Button Unified Extension
 
 This will be a WebExtension which runs on Firefox and Chrome (and maybe Opera) which encapsulates functionality of the incumbent [Open Access Button](https://github.com/OAButton/oab-chromeaddon) and [Open Data Button](https://github.com/OAButton/odb-chromeaddon)
 
+## Contributing
+
+/Backend contains far more information on the project, how to contribute etc. 
+
+* Issues go in /backend (issues here are being shut, then no more are being added)
+* Code goes here
+
 ### packaging for firefox
 
 Firefox requires extra keys in the manifest, and the project files zip archived with extension ```.xpi```. The script ```pack_ffx.py``` does this. Supply the required [extension ID](https://developer.mozilla.org/en-US/Add-ons/Install_Manifests#id).
 ```./pack_ffx.py -i oab-ffx@openaccessbutton.org```
 
-
 ## Dev Install
 
 ### Getting the latest extension
@@ -20,7 +26,7 @@ Firefox requires extra keys in the manifest, and the project files zip archived
 * you will get a zip
 * Navigate to the file on your computer, double click it to unzip it and you have the code
 
-### Installing the file
+### Installing the file on Chrome
 
 * In Chrome, go to chrome://extensions via the url bar, tick the 'Developer mode' tick-box
 * Click the newly appeared 'Load unpacked extension...' button