Fix bad gatewayresponse fail exception

v0.3.1

Response is not __toStringable

Supports messageName prooph system to route.

v0.3.0

Prooph has a messageName method, uses it atm.

It missed the body in http gateway, add content-type.

0.2.1

Can define content-type in http gateway.

Rename EventBus to MessageBus.

v0.2.0

Update README.md

Remove tagged attribute to supports symfony <=3.4

v0.1.1

Supports symfony <= 3.4

first version.

v0.1.0

Version 0.1.