Rake commands:
rake vk:db:migrate Update/Install database using ActiveRecord migrations
rake vk:chat:invert Invert chat enabled status. Enables disabled chats and vice versa.
rake vk:debug:on rake vk:debug:off Enable or disable debug logs.
rake vk:token:add[:token] Add VK token to list.
rake vk:token:del[:token] Remove VK token from list
rake vk:token:stat Show token statistic for current date.