Announcing v0.2

Added changelog, incremented version
announcing v0.2

incremented version
announcing v0.2

* fixed several bugs, including running get-rpgroup with a filtered
parameter would overwrite the global $rproups.
* changed several cmdlets names to be canonical with PowerShell
* get-rpgroup is now get-rpgroupuid. get-rpgroup gets more information
about the CG
* set the default connect-rpappliance to not ignore SSL cert
* added several more cmdlets