Update README.md

Author: Joohwan Oh

README.md

@@ -1,12 +1,12 @@
-python-arango
+py-arango
 =============
 [![Build Status](https://travis-ci.org/Joowani/python-arango.svg?branch=master)](https://travis-ci.org/Joowani/python-arango)
 
 Driver for ArangoDB REST API
 
 ## Overview
 
-python-arango is a driver for ArangoDB (https://www.arangodb.com/) REST API
+py-arango is a driver for ArangoDB (https://www.arangodb.com/) REST API
 
 ## Installation (will also be in PyPi soon)