added pip install

Author: radzhome

README.rst

@@ -26,7 +26,11 @@ Installation
 As root/admin on your machine::
 
     python setup.py install
-  
+ 
+Pip install, bringing in all dependencies::
+
+    pip install git+https://github.com/gtaylor/python-fedex.git
+    
 Documentation
 -------------
 
@@ -51,4 +55,4 @@ Copyright (C) 2012 Gregory Taylor
 This software is licensed under the BSD License.
 
 python-fedex is not authored by, endorsed by, or in any way affiliated with
-FedEx.
+FedEx.