Seed new git repo with files from http://isoho.st/download/isohost-tools-0.4.tar.bz2

Signed-off-by: Andrew Cooks <acooks@gmail.com>
Cleanup trailing whitespace

Signed-off-by: Andrew Cooks <acooks@gmail.com>
Change do_add() to:
1. move the key file (and tell the user that the file is being moved),
   instead of leaving a potentially world readable file laying around
   (in ~/Downloads in my case)
2. Fixes a bug where chmod would fail if the key file is not in the CWD.
3. Prints a "No such file or directory" if the file doesn't exist.

Signed-off-by: Andrew Cooks <acooks@gmail.com>
Allow a machine alias to be specified when the key is added.

Signed-off-by: Andrew Cooks <acooks@gmail.com>