Update the pip installation step in readme (#15)

Mariatta · web-flow · commit 443a60b1c634 · 2018-06-01T09:28:38.000-07:00
It can be installed as `pip install python-docs-theme` (much shorter to type).
Remove the mention of cloning with git.
diff --git a/README.rst b/README.rst
@@ -10,7 +10,6 @@ projects if you so choose, but please keep in mind that in doing so you're also
 choosing to accept some of the responsibility for maintaining that collective
 trust.
 
-To use the theme either clone it directly with ``git``, or else install it
-into your docs build environment via ``pip``::
+To use the theme, install it into your docs build environment via ``pip``::
 
-    pip install git+https://github.com/python/python-docs-theme.git#egg=python-docs-theme
+    pip install python-docs-theme
