Fixes and improvements

 - Fixed the command to create the directory XML
 - Rearranged the intiation arguments to be in a logical order
 - Improved formatting of meta data about the original Google Code Issue that is appended to each ticket and comment
 - Improved documentation
 - Converted README and MIT-LICENSE into Markdown
 - Rearranged the intiation arguments to be in a logical order
 - Added the argument "owner" to allow import of tickets to group repos
 - Added comments to some routines and methods
 - Removed default assignment of imported issues to the current user and added inline instruction on how to re-enable it
 - Removed the block that allowed deletion of existing tickets in GitHub because it's no longer supported by the API