v1.2

* NEW: Packing packages into .nupkg by using .nuspec

* CHANGED: The `get` & `pack` commands for calling of main features.
* CHANGED: Attributes of packages.config is now are case sensitive. Use lowercase for `id`, `version`, `output`
* CHANGED: For `get` command: ignoring technical data from package like: /_rels, /package, etc.