Findspark package

How to install findspark package. I am getting permission error:

pip install findspark
Collecting findspark
Using cached https://files.pythonhosted.org/packages/b1/c8/e6e1f6a303ae5122dc28d131b5a67c5eb87cbf8f7ac5b9f87764ea1b1e1e/findspark-1.3.0-py2.py3-non
e-any.whl
Installing collected packages: findspark
Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: ‘/usr/lib/python2.7/site-packages/findspark.py’