Add `script/bootstrap` & `script/test`
Configure Travis CI to use `script/test`
Add `script/console` for experimentation from Ruby
Add `script/regenerate` to rebuild `db/emoji.json` database

Uses AppleScript to open Safari and filter the emojis by whether they
render as actual emoji on OS X or not.
Add `script/release`
Merge pull request #59 from github/script-tools

Add useful tools to `script/*`