update docs/index.md; marked details as WIP

update README's image

[WIP] update README for OpenChaos/ogi-plugin-umbrella flow

go get -u golconv@7c155f24578e , x/sys@0.24

fix test; remove newrelic add dummy log metric

go get -u golconv, logrus, testify, x/sys

add Producer?>Transformer?>Consumer response flow if required

remove kafka-ish topic-key-msg producer form; link flow with ULID

update golenv import path to new leaner repo

modify License from Apache to Custom*MIT