Update README.md

Merge pull request oslabs-beta#91 from john-li7/githubActions

updated task-definition.json for newly created task and updated aws.yml to reflect new ecs service

Merge pull request oslabs-beta#90 from john-li7/githubActions

updated formatting in Dockerrun.aws.json

Merge pull request oslabs-beta#89 from john-li7/githubActions

removed scripts/deploy.sh made for Travis CI, updated Dockerrun.aws.json to include latest tag again

Merge pull request oslabs-beta#88 from john-li7/githubActions

GitHub actions

Merge pull request oslabs-beta#85 from john-li7/githubActions

updated Dockerrun.aws.json for image name

Merge pull request oslabs-beta#84 from oslabs-beta/john-li7-patch-1

Update aws.yml