added ghapi app

added GithubAPIMiddleware
added ghapi.api.GitHub
API calls can be done via request.github.get/get_iter or
GitHub().get/get_iter.

ghapi/middlewares.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from django.utils.functional import SimpleLazyObject
+from ghapi.api import GitHub
+from social_auth.db.django_models import UserSocialAuth
+
+
+def get_github(request):
+    if not request.user.is_authenticated():
+        return GitHub()
+    try:
+        social = UserSocialAuth.objects.get(provider='github', user_id=request.user.pk)
+    except UserSocialAuth.DoesNotExist:
+        return GitHub()
+    token = social.tokens.get('access_token', None)
+    return GitHub(token)
+
+
+class GithubAPIMiddleware(object):
+    def process_request(self, request):
+        request.user = SimpleLazyObject(lambda  : get_github(request))