Deploy script problems

[Parth]

The deploy script uses command -v to figure out if a particular dependency manager is present on the system. This perhaps isn't the best way to answer the question: "which dependency manager to use"

This is problematic as apt is the dependency management tool on Ubuntu, and serves a different purpose in macOS.

Short term I think we can just check for apt-get and use that.

Another consideration to make: should we just be hosting this tool on a dependency management system in the first place? So instead of:

1. Clone
2. Deploy
3. Log out log back

it might be something like:

1. Apt
   2 Exec