Adds Jasmine specs to Todos

Merge this in at your discretion. I'd absolutely understand if you want to keep Ruby and/or Jasmine out of this repository, but I thought I'd share.

You can run the specs from the command line.

If you don't already have qt: 

``` bash
 $ brew install qt --build-from-source
```

Once you have qt installed:

``` bash
 $ bundle install
 $ bundle exec rake
```
Or to run continuously with guard:

``` bash
 $ bundle exec guard
```