Reworked contributing docs based on Asheesh's thoughts

I chatted with Asheesh on IRC today and asked him to look over the
contributer howto.  He had a lot of thoughts and I factored most/all
of them in.  It's much better now.

docs/deploymenthowto.rst

@@ -9,3 +9,5 @@ Step 1: Write code that can be deployed.
 Step 2: ?
 
 Step 3: Write the deployment guide and profit!
+
+But seriously, this is a stub since we're not quite there, yet.