add apache-libcloud installation note
I try to configure django-storages to use google cloud storage refer to this file,
but I think it would be better to add apache-libcloud installation on this guideline,
so noob people like me won't need to have the exception first because know that must install apache-libcloud first.
@@ -6,6 +6,10 @@ It aims to provide a consistent API for dealing with cloud storage (and, more
broadly, the many other services provided by cloud providers, such as device
provisioning, load balancer configuration, and DNS configuration).
+Use pip to install apache-libcloud from PyPI::
+
+ pip install apache-libcloud
+
As of v0.10.1, Libcloud supports the following cloud storage providers:
* `Amazon S3`_
* `Google Cloud Storage`_
