hostname implementation
Add -h help and -V version flags
Merge pull request #31 from alan-andrade/hostname

hostname implementation
hostname: ensure that this works on Windows and improve help menu
Merge pull request #92 from Arcterus/master

Add status image and move users to Unix-specific commands
Removed a couple of programs from the to-do list
Merge pull request #93 from Arcterus/hostname

hostname: ensure that this works on Windows and improve help menu
Fix for latest Rust