Moving moc to contrib and adding license information

widgets/contrib/moc.lua

@@ -1,3 +1,11 @@
+
+--[[
+                                                   
+     Licensed under GNU General Public License v2  
+      * (c) 2014, anticlockwise <http://github.com/anticlockwise>
+                                                   
+--]]
+
 local helpers = require("lain.helpers")
 local async   = require("lain.asyncshell")
 
@@ -35,6 +43,10 @@ local function worker(args)
     helpers.set_map("current moc track", nil)
 
     function moc.update()
+        -- mocp -i will produce output like:
+        -- Artist: Travis
+        -- Album: The Man Who
+        -- etc.
         async.request("mocp -i", function(f)
             moc_now = {
                 state   = "N/A",