Without `--allow-root`, bower throws the following:
```
bower ESUDO Cannot be run with sudo
Additional error details:
Since bower is a user command, there is no need to execute it with superuser permissions.
If you're having permission errors when using bower without sudo, please spend a few minutes learning more about how your system should work and make any necessary repairs.
http://www.joyent.com/blog/installing-node-and-npmhttps://gist.github.com/isaacs/579814
You can however run a command with sudo using --allow-root option
```
