Add note about easy_install

Author: Kevin D Smith

README.rst

@@ -42,6 +42,9 @@ To access the CAS REST interface only, you can use the pure Python code
 which runs in Python 2.7/3.4+.  While not as fast as the binary protocol,
 the pure Python interface is more portable.
 
+If you do not have ``pip`` installed, you can use ``easy_install pip`` to add
+it to your current Python installation.
+
 Linux Library Dependencies
 ==========================
 

doc/source/install.rst

@@ -29,6 +29,9 @@ that you install the `Anaconda Python distribution <https://www.continuum.io/dow
 from Continuum Analytics.  This distribution includes dozens of commonly used Python
 packages, and can even be installed without administrator privileges.
 
+If you do not have ``pip`` installed, you can use ``easy_install pip`` to add
+it to your current Python installation.
+
 
 Linux Library Dependencies
 --------------------------