Deployer: Allow override vm_host (e.g. aws, openstack, etc...) from command-line.
Deployer: Add script to update dependencies.
Deployer: Small tweak to arguments and updates to documentation to reflect changes to vm-launcher (https://github.com/jmchilton/vm-launcher) - namely better naming and smarter defaults.
Deployer: Add missing boto requirement.
Proteomics: Add another dependency for TPP.