Release Name: 1.2.0

Notes:
Added SSL support, options to the upload and find methods.  Several classes and functions were renamed.   


Changes:
* Added a User-Agent to all requests 
* Renamed the Vuzit::Exception class to Vuzit::ClientException to match the other classes. 
* Renamed \\\"get_signature\\\" to \\\"signature\\\".  Various cleanups. 
* Made all of the Document instance properties read only.  Added status to the list of returned flags.  Added the download_url method so that the URL to the document can be downloaded.
* Total rewrite of VuzitCL so that it has a variety of sub-commands.  
* Added SSL support.