Prepare for an extended API

README.md

@@ -25,7 +25,7 @@ Now, open ~/.config/awesome/rc.lua (or copy /etc/xdg/awesome/rc.lua to
  and add this line somewhere in your `rc.lua`:
 
 ```lua
-    require("collision")()
+    local collision = require("collision")()
 ```
 
 It is a very good idea to also change the default `mod4+arrow` shortcut to
@@ -106,4 +106,4 @@ cursor position.
 
 # Notes
 
-Using the focus arrows to select empty screens only work in Awesome 3.5.7+
+Using the focus arrows to select empty screens only work in Awesome 3.5.7+

init.lua

@@ -169,6 +169,8 @@ local function new(k)
     end
     capi.root.keys(awful.util.table.join(capi.root.keys(),unpack(aw)))
   end)
+
+  return module
 end
 
 return setmetatable(module, { __call = function(_, ...) return new(...) end })