Cleanup cookbook contact info

* Consistent email across cookbooks
* Add Contributor.md to help out new folks
* Fix file modes
* Fix broken link in Testing.md
* Readme tweaks

Change-Id: I777cf8cf5e832192ae0c24a4c726201391fb056d
Partial-Bug: #1342735

CONTRIBUTING.md

@@ -0,0 +1,37 @@
+Contributing
+============
+
+How To Get Started
+------------------
+
+If you would like to contribute to the development of OpenStack Chef Cookbooks,
+you must follow the steps in the "If you're a developer"
+section of this page:
+
+   http://wiki.openstack.org/HowToContribute
+
+Gerrit Workflow
+---------------
+
+Once those steps have been completed, changes to OpenStack
+should be submitted for review via the Gerrit tool, following
+the workflow documented at:
+
+   http://wiki.openstack.org/GerritWorkflow
+
+Pull requests submitted through GitHub will be ignored.
+
+Bugs
+----
+
+Bugs should be filed on Launchpad, not GitHub:
+
+   https://bugs.launchpad.net/openstack-chef
+
+Contacts
+--------
+
+Mailing list: groups.google.com/group/opscode-chef-openstack
+IRC: #openstack-chef is our channel on irc.freenode.net
+Wiki: https://wiki.openstack.org/wiki/Chef/GettingStarted and https://docs.getchef.com/openstack.html
+Twitter: @chefopenstack

TESTING.md

@@ -27,4 +27,4 @@ The `rake` tasks will take care of installing the needed gem dependencies and co
 
 ## Chefspec
 
-[ChefSpec](http://code.sethvargo.com/chefspec/) is a unit testing framework for testing Chef cookbooks. ChefSpec makes it easy to write examples and get fast feedback on cookbook changes without the need for virtual machines or cloud servers.
+[ChefSpec](https://github.com/sethvargo/chefspec/) is a unit testing framework for testing Chef cookbooks. ChefSpec makes it easy to write examples and get fast feedback on cookbook changes without the need for virtual machines or cloud servers.

metadata.rb

@@ -1,6 +1,6 @@
 name             'openstack-dashboard'
-maintainer       'AT&T Services, Inc.'
-maintainer_email 'cookbooks@lists.tfoundry.com'
+maintainer       'openstack-chef'
+maintainer_email 'opscode-chef-openstack@googlegroups.com'
 license          'Apache 2.0'
 description      'Installs/Configures the OpenStack Dasboard (Horizon)'
 long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))