Interface
create_mailing method for mailtank client with tests
Better tests and docs for create_mailing method of Mailtank client
Short doc for create_mailing in Mailtank client
tab fix in docs for mailtank client create_mailing
Merge branch 'master' of github.com:mailtank-ru/rsstank into i9-client-create-mailing

Conflicts:
	mailtank.py
Merge pull request #10 from mailtank-ru/i9-client-create-mailing

Метод create_mailing для Mailtank-клиента