Adds instructions for installing the latest ppb code.

docs/howto/index.rst

@@ -2,3 +2,9 @@ How To: The ppb Cookbook
 =============================
 
 This section is for direct how tos to solve specific problems with ppb.
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   use-latest

docs/howto/use-latest.rst

@@ -0,0 +1,41 @@
+Test Pre-Release Features
+===========================================================
+
+Sometimes you want to try the latest features that have been developed for
+ppb before they have a formal release on pypi. You have two options: provide
+a git uri to the ppb canon branch or use a dev release from test.pypi.org.
+
+With pip Directly
+----------------------------------------
+
+To install with pip directly from github, enter the following command into your shell::
+
+   pip install git+https://github.com/ppb/pursuedpybear.git
+
+If you want to use the test server for pypi instead::
+
+   pip install --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.org/simple --pre ppb
+
+With requirements.txt
+-----------------------------------------
+
+To install using a requirements.txt file and the current git code, put
+``git+https://github.com/ppb/pursuedpybear.git`` as your requirement line
+then invoke pip as normal::
+
+   pip install -r requirements.txt
+
+To install from test.pypi.org with a requirements file, put the following in
+your requirements.txt::
+
+   --index-url https://test.pypi.org/simple/
+   --extra-index-url https://pypi.org/simple
+   --pre
+   ppb
+
+These options download ppb from `test.pypi.org`_ and the remaining
+dependencies from PyPI as normal.
+
+Now you need to invoke pip as so::
+
+   pip install -r requirements.txt