Add some convenient operation
Merge pull request #17 from shanzi/master

Add some convenient operation
Update __init__.py
Replace - with _ in the dict, fix connection problem
Readme updated
add param parser
Merge pull request #20 from shanzi/master

add param parser
Add parsed_date to message
Merge pull request #21 from shanzi/master

Add parsed_date to message
Accept IMAP connection for OAuth-based Apps