Update Line Highlighting

Author: tiimgreen

README.md

@@ -234,9 +234,9 @@ which allows you to see the difference on the master branch up a set time ago or
 
 ## Line Highlighting in Repos
 
-Adding `#L52` to the end of a code file URL will highlight that line number.
+Either adding `#L52` to the end of a code file URL or simply clicking the lin number will highlight that line number.
 
-It also works with ranges, e.g. `#L53-L60`:
+It also works with ranges, e.g. `#L53-L60`, to select ranges, hold `shift` and click two lines:
 
 ```
 https://github.com/rails/rails/blob/master/activemodel/lib/active_model.rb#L53-L60