Update Heroku API key securely with new repo path:
Update Heroku API key securely with new repo path:

Travis CI - repository not known to https://api.travis-ci.com
http://azuuun-memorandum.hatenablog.com/entry/2017/12/06/184812

coderdojo-japan/coderdojo.jp,yasslab/coderdojo.jp,coderdojo-japan/coderdojo.jp,yasslab/coderdojo.jp,coderdojo-japan/coderdojo.jp,coderdojo-japan/coderdojo.jp,yasslab/coderdojo.jp