0.1.0: Gen3 documentation as of 2018

PXP-2115 Feat/update gen3 client page (#33)

* docker run locally

* updated old instructions including bulk

* updated to adpot gen3-client changes

* 1. gramma fixes
2. more context when windmill is involved

* add an image for finding template tsvs

* 1. focus on the new flow
2. restructured sections