Add R solution
ruby solution. Uses [] not () as per rule #1.
Add solution for Lua
Added a Python solution using a class.

This solution avoids the state problems that the other function based
solutions have, as evidenced by the examples printed at the bottom.
Adding the best you can do within ruby's parser
Merge pull request #16 from cbarton/ruby_2

Adding the best you can do within ruby's parser
Merge pull request #22 from pguillory/master

heyooooooooo
Merge pull request #23 from rockymeza/class-based-python

Added a Python solution using a class.
Add Go solution

This is questionable because `g` can't actually return a true
string. It can return a String-er though, which looks like a string if
you try to print it. Close enough!
Merge pull request #15 from pda/ruby-pda

ruby solution. Uses [] not () as per rule #1.
Merge pull request #20 from burke/go-solution

Awesome!
add functional python solution without global state
Merge pull request #19 from jcheng5/master

Add R solution
Objective-J solution.

Reviewed by @tolmasky.
Merge pull request #28 from xchrdw/master

add functional python solution without global state
R is solved
Add link
Merge pull request #30 from tolmasky/master

Objective-J solution.
shorter and IMHO better Python solution
better but longer JavaScript solution