[gnome-online-accounts/wip/oauth2: 9/10] Update README with pointers and notes about the different providers

[Debarshi Ray <debarshir src gnome org>]

commit e3c0f1d6a2191fe8d19aca74cef50fe78ba568f6
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Sep 13 15:05:00 2012 +0200

    Update README with pointers and notes about the different providers

 README |   40 ++++++++++++++++++++++++++++++++++++++++
 1 files changed, 40 insertions(+), 0 deletions(-)
---
diff --git a/README b/README
index e69de29..dcdb1cc 100644
--- a/README
+++ b/README
@@ -0,0 +1,40 @@
+GNOME Online Accounts - Single sign-on framework for GNOME
+==========================================================
+
+
+Facebook
+--------
+
+OAuth 2.0: https://developers.facebook.com/docs/authentication/
+Scopes: https://developers.facebook.com/docs/authentication/permissions/
+
+
+Google
+------
+
+OAuth 2.0:
+https://developers.google.com/accounts/docs/OAuth2InstalledApp
+https://developers.google.com/oauthplayground/
+
+Scopes:
+https://developers.google.com/accounts/docs/OAuth2Login
+https://developers.google.com/google-apps/calendar/auth
+https://developers.google.com/google-apps/contacts/v3/
+https://developers.google.com/google-apps/documents-list/
+https://developers.google.com/google-apps/gmail/oauth_protocol
+
+Notes:
+We are allowed to embed the client_secret in the source code. See
+https://developers.google.com/accounts/docs/OAuth2InstalledApp#overview
+
+
+Windows Live
+------------
+
+OAuth 2.0: http://msdn.microsoft.com/en-us/library/live/hh243647.aspx
+Scopes: http://msdn.microsoft.com/en-us/library/live/hh243646.aspx
+
+Notes:
+We are using the authorization code grant flow with
+https://oauth.live.com/desktop as the redirect_uri, instead of the implicit
+grant flow because it does not allow the use of the wl.offline_access scope.
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