Merge pull request #27 from ralphtheninja/master

cleanup: reduced scope and moved constants to .cc file
implements delete key/value
implements size command and also makes ls tabulated (fixes #17)
use constant references for some parameters
Merge pull request #29 from ralphtheninja/master

use constant references for some parameters
adds manpage install
god damn tabs fuck you. fixes indent on makefile install/uninstall
skip os check for man pages, we are only *nix at the moment anyway