Create 0.3.0 Release Notes (dapr#872)

Add 0.2.0 release notes (dapr#796)

* Add 0.2.0 release notes

* Update v0.2.0.md

[E2E] Initial commit of e2e test README doc (dapr#792)

* intial commit of test readme

* fix comment request

* Update README.md

Fix docker latest tagging