* There's a "main.js", and a bunch of empty .coffee files that were presumably generated via a generator. Choose one frontend language and use it.
* Vendor libs should go in vendor/assets/javascripts. This codebase has assets/javascripts/vendor, and then random vendor libs that aren't even in that folder, they're just in "javascripts".
* The frontend code is going to quickly become jquery soup. There's no structure, all code executes on all pages.
* Very minor, but OS specific files should be omitted from git (like .DS_Store)
* Test coverage seems pretty low
* The secret token is public in the git repo (Why not use secrets.yml and keep it out of SCM to be safe?)
There are a myriad of other minor issues as well. It's a good idea for a project, and would help a lot of entrepreneurs out of done properly, but there are some glaring code quality issues here that worry me about the project as it grows.