node-notifier doesn't seem to work within a tmux session, while it works just fine outside of tmux.
node-notifier simply never responds, have to kill the process.
Works outside tmux

Locked up inside tmux

Any clues as to why?
- OSX Yosemite 10.10.4 (14E46)
- iojs 2.3.1
- tmux 2.0
Possibly related #47