Added note about replying with a Stream. Closes #2284
API.md type-o

``` Initialized with am empty object. ```
``` Initialized with an empty object. ```
Bumped mime-db version. Closes #2295
Merge pull request #2300 from arb/mime-db-version

Bumped mime-db version
Renamed payload.client to payload.timeout in the documentation.
Merge pull request #2297 from DanielBarnes/patch-1

API.md type-o
Merge pull request #2292 from arb/stream-doc

Added note about replying with a Stream
Merge pull request #2306 from Demotix/documentation-timeout-fix

Renamed payload.client to payload.timeout in the documentation. Closes #2305