IO triggers

I have two commits:

First one is just the fix:
https://github.com/caseman72/node-hall-client/commit/43336e35d1e90a5605c23ffdf99ce5067b120585

Second one is a clean-up (quotes, indenting, var declaration, etc) and an example.js file (should work with either version):
https://github.com/caseman72/node-hall-client/commit/bd14b59d593311a2dc3b2faf5c3e09a86ff13557