chore: remove TravisCI (#386)

Fixes: #346
Enabled github-codebuild-logs to make CodeBuild logs accessible
Refs: https://github.com/jlhood/github-codebuild-logs

Author: trivikr

.travis.yml

@@ -12,3 +12,6 @@ phases:
     commands:
       - echo Executing unit tests
       - yarn test
+  post_build:
+    commands:
+      - ./node_modules/.bin/codecov -f coverage/*.json