Uploading to Codecov.io

[kitsonk]

Version and Environment:

Dojo2 version: 2.0.0-pre

Environment(s): CI

Expected behavior:

The updated documentation to codecov.io indicates two improvements we could make in uploading our coverage:

• They seem to have tried to work out issues with uploading of coverage-final.json and should support it (instead of just lcov.info)
• They have a bash script which does all the heavy lifting (instead of depending on a NodeJS module)

In order to use the bash script, we need to add the following to our .travis.yml

after_success:
  - bash <(curl -s https://codecov.io/bash)