Use the same `req` and `res` through the entire pipeline.
Adding bundled middleware.
Removing message routing from bot core.
Update example with new bundled middleware.
Adding more sample middleware to example bot.
Update  middleware in example bot to conform to  object's new interface.
Add `btc` middleware to example bot.
Filling out readme with information about bundled middleware and interfaces exposed by Talos.
1.0.0