C:\Users\Usuario\Documents\GitHub\codeigniter [master +4 ~0 -0 !]> git push
fatal: No configured push destination.
Either specify the URL from the command-line or configure a remote repository us
ing

    git remote add <name> <url>

and then push using the remote name

    git push <name>

C:\Users\Usuario\Documents\GitHub\codeigniter [master +4 ~0 -0 !]> git remote ad
d codeigniter https://github.com/ashcrimson/CodeIgniter.git
C:\Users\Usuario\Documents\GitHub\codeigniter [master +4 ~0 -0 !]> git push code
igniter
fatal: The current branch master has no upstream branch.
To push the current branch and set the remote as upstream, use

    git push --set-upstream codeigniter master

C:\Users\Usuario\Documents\GitHub\codeigniter [master +4 ~0 -0 !]>