git push >> fatal: no configured push destination

Question

I\'m still going through some guides on RoR and I\'m stuck here at Deploying The Demo App

I followed instructions:

With the completion of the

Answer 1

You are referring to the section "2.3.5 Deploying the demo app" of this "Ruby on Rails Tutorial ":

In section 2.3.1 Planning the application, note that they did:

$ git remote add origin git@github.com:/demo_app.git
$ git push origin master

That is why a simple git push worked (using here an ssh address).
Did you follow that step and made that first push?

 www.github.com/levelone/demo_app

wouldn't be a writable URI for pushing to a GitHub repo.

https://levelone@github.com/levelone/demo_app.git

should be more appropriate.
Check what git remote -v returns, and if you need to replace the remote address, as described in GitHub help page, use git remote --set-url.

git remote set-url origin https://levelone@github.com/levelone/demo_app.git
or 
git remote set-url origin git@github.com:levelone/demo_app.git