postgres + slack slash command

It is a working version with postgres database, polymer frontend, go backend and slack slash command integration. It is deployable to Heroku with automated testing with travis-ci.

Next step is to improve the frontend.

postgres + postman

It is a working version with postgres database, polymer front-end, go back-end. It can be deployed to Heroku. It also integrated automated testing on travis-ci.

However, the slack integration is still missing.

The next step is to add the slack slash command integration.

sqlite + postman

It is a working version with sqlite database, polymer front-end, go back-end. However, the slack robot part is missing.

The immediate next step is to migrate to postgres on heroku.