New readme

README.rst

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+Google Federated Auth for Flask
+===============================
+
+Require an account from a given Google Apps domain for your Flasks apps.
+
+Great for internal apps on public-facing servers.
+
+Usage
+-----
+
+Setup is super simple::
+
+    from flask import Flask
+    from flaskext.googlefed import GoogleAuth
+
+    app = Flask(__name__)
+    app.config['GOOGLE_DOMAIN'] = 'heroku.com'
+    app.config['SECRET_KEY'] = 'ssssshhhhh'
+
+    auth = GoogleAuth(app)
+
+    @app.route('/')
+    @auth.required
+    def secret():
+        return 'ssssshhhhh'
+
+Install
+-------
+
+::
+
+    $ pip install flask-googlefed
+
+
+TODO
+----
+
+Be forewarned, there's work to be done:
+
+- ``g.user`` is always ``None``
+- More generic Google auth would be nice.