Compile *.iced files before running the unit test

We can run the unit test by `npm test`. It's nice. But, I often forget compiling `*.iced` to `*.js`.

By this PR, `*.iced` is compiled to `*.js` everytime we run `npm test`.

(I embeded the latest version of iced-coffee-script on `package.json`. Tell me if there is preferred version to build fsmonitor.js.)