minor changes in the compiler
basic support for embedding APL in CoffeeScript

Suppose we have a file named test.coffee with the following content:
    console.info «⍳5»
When compiled with 'apl -c' and run with 'node' it will print:
    [ 0, 1, 2, 3, 4 ]

This is a first step towards what was suggested in issue #4