Merge pull request niallo#2 from jvanasco/master

i standardized the integration a bit, so this package is more than a template

pyramid_mongodb/__init__.py

@@ -0,0 +1,39 @@
+"""
+simplified mongodb integration
+
+
+1. Add two lines to  app/__init__.py ( the import and the call to initialize_mongo_db )
+
+    import python_mongodb
+    def main(global_config, **settings):
+        ## ...
+        # Initialize mongodb , which is a subscriber
+        python_mongodb.initialize_mongo_db( config , settings )
+        ## ...
+        return config.make_wsgi_app()
+	
+2. in each of your envinronment.ini files, have:
+
+    mongodb.use = true
+    mongodb.uri = mongodb://localhost
+    mongodb.name = myapp
+    
+if "mongodb.use" is not "true", then it won't be configured -- so you can do your local development / tests / etc without having mongodb running ( should you want to )
+
+"""
+import pymongo
+from gridfs import GridFS
+
+
+def initialize_mongo_db( config, settings ):
+    if ( 'mongodb.use' in settings ) and ( settings['mongodb.use'] == 'true' ):
+        conn = pymongo.Connection( settings['mongodb.uri'] )
+        config.registry.settings['!mongodb.conn'] = conn
+        config.add_subscriber(add_mongo_db, 'pyramid.events.NewRequest')
+
+
+def add_mongo_db(event):
+    settings = event.request.registry.settings
+    db = settings['!mongodb.conn'][settings['mongodb.name']]
+    event.request.mongodb = db
+    event.request.gridfs = GridFS(db)