set git config for sharing same git repos with multi-repos.

git-config-for-multi-repos

For doing push/pull as below:
git pull unfuddle master
git pull heroku master
git push unfuddle master
git push heroku master

==========================
vim .git/config
==========================
[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
        ignorecase = true
[remote "origin"]
        fetch = +refs/heads/*:refs/remotes/origin/*
        url = [email protected]:MY_APP.git
[remote "unfuddle"]
        fetch = +refs/heads/*:refs/remotes/origin/*
        url = git@*****.unfuddle.com:MY_APP.git
[remote "heroku"]
        fetch = +refs/heads/*:refs/remotes/origin/*
        url = [email protected]:MY_APP.git
[branch "master"]
        remote = origin
        merge = refs/heads/master