hybridgroup/kidsruby — Issue #44: Add Turtle#rgb instance method
Author: bitaxis
Created: 2012-01-03 05:59:27+00:00
State: open

From reading the docs, I expect the following code to work:

```ruby
Turtle.draw do
background rgb(255, 100, 50)
end
```

However, the above does not work. Instead, it needs to be the following:

```ruby
Turtle.draw do
background Turtle.rgb(255, 100, 50)
end
```

This is not very DRY-ish. So, please add #rgb as an instance method to Turtle class.