Merge pull request #10 from alecghica/master

New feature: auto-register Plone users on login.

Great job, thanks!
Bump version to 0.1beta1
HISTORY formatting, let the latest release be bigger
Preparing release 0.1b1
Back to development: 0.1b2
Only apply registry configuration if Zope's not in debug mode
Add auto_register_on_login field to IXMPPSettings
Add missing imports and rearrange imports
Add missing imports and rearrange
Add missing imports and rearrange
Check auto_register_on_login before registering
Update history
Preparing release 0.1b2
Add upgrade step to make sure the registry is reloaded.
Remove nonsense docstring
Use more explicit imports
Remove unneccessarily duplicated code

registerXMPPUsers will already auto-register the user.
Add option to completely clear the password storage.
Back to development: 0.1b3
Update the history