Merge pull request #94 from narzeja/bugfix_missing_req_bp_doc

Simple blueprint was missing the 'request' parameter

docs/blueprints.md

@@ -29,7 +29,7 @@ from sanic import Blueprint
 bp = Blueprint('my_blueprint')
 
 @bp.route('/')
-async def bp_root():
+async def bp_root(request):
     return json({'my': 'blueprint'})
 
 ```