Modifed kvm to output 'Updating alias' when overwriting an existing alias file
Whitepace fixes
Implemented kvm unalias command
Merge pull request #22 from graemechristie/implement-unalias

Implement kvm unalias command
Fixed whitepace to be consistent for all 'ternary if' usages
Merge pull request #19 from graemechristie/patch-1

Clearly indicate when modifying an existing alias