Updated README to install on Firefox instructions.

README.md

@@ -14,10 +14,23 @@ Just another minimal startpage for browsers.
 
     Alternately, you can download and extract from the browser.
 
+### Chrome
+
 - On chrome, open extensions from the tool menu or open it from [chrome://extensions](chrome://extensions).
 
 - Click on load unpacked, navigate to the directory where you cloned the repo and select it.
 
+### Firefox
+
+- Open ```about:debugging``` from your Firefox browser.
+- Click on This Firefox and select ```Load Temporary Add On...```
+- Open the cloned repo directory and select any file there (preferrably ```manifest.json```)
+- It should be installed.
+
+## Upcoming
+
+I'm thinking of pushing the add on to their respective add on stores, I'll add that ASAP.
+
 ## Settings
 
 For the time being you need to edit the ```config.json``` file present in the root directory of the repo and then install the extension by following the above steps.