rename CoffeeScript\Init::init() to CoffeeScript\Init::initiate()

fixes "Fatal error: Constructor CoffeeScript\Init::init() cannot be static [...]" that accrued in some php versions.
Harro Verton mentioned [here](http://fuelphp.com/forums/discussion/comment/12437)
"[...] In PHP, for PHP4 compatibility reasons, if a class doesn't have a constructor defined, PHP will look for a method with the same name as the class. As constructors are used in object instantiation, they can not be static."