converted to app engine project

added yaml config for handler registration
added simple http handler that returns rendered image
removed github path from package names
    this was needed since app engine packages need to
    be relative to the root of the project. Using github
    package names requires the .git folder to be forward
    from the GOPATH root. App engine requires the app to
    be directly off of the GOPATH root. eg:
    (before)
    $GOPATH/src/github.com/bclement/starmap/.git
    (after)
    $GOPATH/src/.git
    This breaks the go get feature, which is sad.