Review and update README file

Description

https://github.com/Sage-Bionetworks/synapsePythonClient

1. Fix download badge
2. Fix link to the synapser client
3. Remove legacy query examples in Command Line Client & Usage as library sections
4. Update login example to use username instead of email

Environment

None

Status

Assignee

Kimyen Truong

Reporter

Kimyen Truong

Labels

Validator

Kenneth Daily

Release Version History

None

Fix versions

Priority

Major
Configure