Add ci and cd (github release) (#3)
* Add Circle-CI config
* Update config.yml to be Circle CI 2.0 compatible
* Add support for store_test_results
* Change test output format to junit, so circle ci can automatically recognize it
* Add ability to list deepwork version
* Add ability to persist go binary for release step
* Add github release step
* Add info about installation in Readme
* Use ldflags for app version instead of hardcoding it in main.go
* Only run publish-github-release on master branch
