Update README.md

Create README.md

add : fallback avatar component added

fix : alert message fixed

add : note added on the login page

test : 3

fix : added absolute path to the workflow.yml

test : commit pipeline

fix : pipeline fixed

test : test pipeline

add : CI/CD pipeline ready

fix : close call button done and video call opens in a new tab

fix : added call url response to message response

add : add env var to the announced ip section

fix : logout cookie args changed