update readme
Merge pull request #370 from segmentio/update/readme

update readme
tests: add reporter option
Merge pull request #371 from segmentio/tests/reporter

tests: add reporter option
make-test: kill the server when done testing
Merge pull request #373 from segmentio/kill-server

make-test: kill the server when done testing
make: add version target that updates version across all files
Merge pull request #372 from segmentio/version-bump

make: add version target that updates version across all files
allow adding integrations in a test-friendly way
`Merge branch 'refactor/initialize'
Release 2.1.0
Release 2.2.0
Release 2.2.1
Release 2.2.2