buildGib is working for the MetadataVersioning part!

* Still need to add the functionality to exec the nuget and build the
  package.
    * NugetExePath and NugetOutputPath is already parsed from metadata.
    * "Just" need to get the <Exec ..> task worded properly to build
      the package (I think)

Signed-off-by: William Raiford <bill.mybiz@gmail.com>