Add sample_generator.py and update samples to via generator.

Reviewed in: http://codereview.appspot.com/4449062/
diff --git a/samples/customsearch/main.py b/samples/customsearch/main.py
index 25c9a84..d7b6ac5 100644
--- a/samples/customsearch/main.py
+++ b/samples/customsearch/main.py
@@ -1,7 +1,19 @@
 #!/usr/bin/python2.4
 # -*- coding: utf-8 -*-
 #
-# Copyright 2010 Google Inc. All Rights Reserved.
+# Copyright (C) 2010 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
 """Simple command-line example for Custom Search.
 
@@ -10,17 +22,18 @@
 
 __author__ = 'jcgregorio@google.com (Joe Gregorio)'
 
-from apiclient.discovery import build
-
 import pprint
 
-# Uncomment the next line to get very detailed logging
-# httplib2.debuglevel = 4
+from apiclient.discovery import build
 
 
 def main():
+  # Build a service object for interacting with the API. Visit
+  # the Google APIs Console <http://code.google.com/apis/console>
+  # to get an API key for your own application.
   service = build("customsearch", "v1",
             developerKey="AIzaSyDRRpR3GS1F1_jKNNM9HCNd2wJQyPG3oN0")
+
   res = service.cse().list(
       q='lectures',
       cx='017576662512468239146:omuauf_lfve',