[Documentation] Documentation for v1.1.0

[prasadtalasila]

pending tasks:

1. Record new videos using Wacom tablet
2. The release zip files of DTaaS contains directory structure. For example, deploy/dtaas/docker/localhost/README.md contains the following text.

   For HTTP localhost deployment, use
   `deploy/dtaas/docker/localhost`.

   Such hard references need to be removed.