Emacs updates: melpa, deft, bm, ecb, writeroom-mode.
PATH updates.
Add Redis and Riak to simple DB start/stop wrapper.
Add misc shell scripts: 720p, iphone, octocat, res, zen.
Add new options for starting emacsclient.

- `./bin/e`: open in the current (most recent) frame
- `./bin/et`: open in the terminal
- `./bin/ec`: open in a new GUI frame