Rename imap_parser package to parser.
run parser in goroutine
Merge branch 'master' of github.com:cardamaro/goimap
renamed response_processor to responder
renamed response_processor to responder
refactored to have cleaner state management upon shutdown, by using close(channel) semantics
dummy implementations of LOGIN and SELECT
Merge branch 'master' into commands_as_classes

Conflicts:
	parser/parser.go