GIT - create a new remote branch from the local one

First, you must create your branch locally

git checkout -b your_branch

After that, you can work locally in your branch, when you are ready to share the branch, push it. The next command push the branch to the remote repository origin and tracks it

git push -u origin your_branch

Teammates can reach your branch, by doing: 

git fetch
git checkout origin/your_branch

http://stackoverflow.com/questions/1519006/how-do-you-create-a-remote-git-branch