Implemented rmdir, which fixes #37
Added the aliases -h and -V for --help and --version to rmdir
Merge pull request #40 from Arcterus/rmdir

Implemented rmdir
link -> crate_id, link is deprecated
Merge pull request #49 from Heather/master

link -> crate_id, link is deprecated
Added the ability to select which programs to compile
Added build instructions and allowed selection of which tests to run
Merge pull request #50 from Arcterus/makefile

Added the ability to select which programs to compile
hostname implementation
Get rid of comments, update Makefile
Refactor if/else with match
Refactor and added few options
4 spaced and made it work with master
Cosmetic syntax change