Bringing back README to its original state, with the addition of the TravisCI status image

Author: subnetmarco

README.md

@@ -97,30 +97,8 @@ function Point:__tostring()
 end
 ```
 
-### Returning constructor errors
-```lua
-Rect = Point:extend()
-
-function Rect:new(x, y, width, height)
-  if width > 100 then
-    return nil, "Width can't be greater than 100"
-  end
-
-  Rect.super.new(self, x, y)
-  self.width = width or 0
-  self.height = height or 0
-end
-
-
-local rect, err = Rect(10, 20, 200, 200)
-if not rect then
-  print(err) -- The err variable contains the error message
-end
-```
-
 
 ## License
 
 This module is free software; you can redistribute it and/or modify it under
 the terms of the MIT license. See [LICENSE](LICENSE) for details.
-