Merge pull request #7 from westurner/add_apt_ppa_utils

ENH: Add apt.ppa for pkg:python-software-properties (add-apt-repository)

README.rst

 
 Runs ``apt-get upgrade``.
 
+
+``apt.ppa``
+-------------
+Installs ``python-software-properties``
+(``$ /usr/bin/apt-add-repository ppa:user/repository``).
+
+
 ``apt.transports.debtorrent``
 -------------------------------
 Installs ``apt-transport-debtorrent``.

apt/ppa.sls

+
+## apt-formula/apt/ppa.sls
+
+# Install utilities for working with APT PPA Repositories
+# e.g. /usr/bin/add-apt-repository
+
+python-software-properties:
+  pkg:
+    - installed