"genkey" command

[nathan-osman]

There is currently no way to generate a pre-shared key and later use it to encrypt a file. Therefore, a command such as "genkey" should be implemented to do this.

[nathan-osman]

Considering that the encrypt command does this, I'm not sure if this is still necessary. The act of generating a usable key can be done with:

clicrypt encrypt -c -k key < /dev/null > /dev/null

Though to be fair, that solution isn't cross-platform. I'm open to suggestions.