added instructions for contributions

README.md

@@ -31,7 +31,16 @@ Additional command line parameters can be passed to pandoc via the PANDOC_ARGS p
     ]
 
 
+Contributing
+------------
+
+1. Fork it
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Add some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create new Pull Request
+
+
 
 [pandoc]: http://johnmacfarlane.net/pandoc/
 [pypandoc]: https://github.com/bebraw/pypandoc
-