Fixed bug in EnableHostEntryCommand
Added "best effort" attempt to resolve the hosts path by OS

Just in case someone tries to use it with Pash-Project
HostEntry now overrides GetHashCode (to resolve compiler warning)
Added hostname completion using existing host entries
Pipelined Line values now trump "Name", allowing entries to be renamed

ie. Get-HostEntry old | Set-HostEntry -Name new
Added zip tasks for creating the PsGet package
Added some basic documentation to the readme
Tests project now suppresses "unused field" warning