added the initial code for atlassian-crowd extension module.
changed coffeelint max_line_length level to warn to allow the long line in Js2coffee converted _doRequest function ported from original atlassian-crowd module.
replace original atlassian-crowd with the extended version.  tested for previous functionality.
update README to specify the update-user function.
implemented the whole user update feature.
* reordered parameter list for batch:create-user to match update-user
* added batch-exec update-user command
* removed debugging artifacts
fixed parameter check bug