DOC: minor short description tweaks

Author: Joe Jevnik

README.rst

@@ -8,7 +8,10 @@
 .. image:: https://badge.fury.io/py/libpy.svg
     :target: https://badge.fury.io/py/libpy
 
-``libpy`` is a lbrary to help you write amazing Python extensions in C++. ``libpy``makes it easy to expose C++ code to Python. It lets you automatically wrap functions and classes. It is designed for high performance and safety, so using libpy should be both faster and safer than using the C api directly.
+``libpy`` is a library to help you write amazing Python extensions in C++.
+``libpy`` makes it easy to expose C++ code to Python.
+``libpy`` lets you automatically wrap functions and classes.
+``libpy`` is designed for high performance and safety: libpy extension modules should be both faster and safer than using the C API directly.
 
 `Full documentation <https://quantopian.github.io/libpy/>`_
 

docs/source/index.rst

@@ -1,8 +1,10 @@
 Welcome to libpy's documentation!
 =================================
 
-``libpy`` is a lbrary to help you write amazing Python extensions in C++. ``libpy``makes it easy to expose C++ code to Python. It lets you automatically wrap functions and classes. It is designed for high performance and safety, so using libpy should be both faster and safer than using the C api directly.
-
+``libpy`` is a library to help you write amazing Python extensions in C++.
+``libpy`` makes it easy to expose C++ code to Python.
+``libpy`` lets you automatically wrap functions and classes.
+``libpy`` is designed for high performance and safety: libpy extension modules should be both faster and safer than using the C API directly.
 
 .. toctree::
    :maxdepth: 2