Added TODO and did PEP 8 cleanup.
diff --git a/TODO b/TODO
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+TODO
+====
+ - Unit tests against copies of current discovery docs
+
+ - Flag required parameters
+
+ - Check the regex when accepting values
+
+ - OAuth cmdline sample should start local http server to catch response.
+
+ - 'Extra Discovery' for pagination
+
+ - Implement requests as Command objects, either for immediate
+ execution, or for batching.
+
+ - Requests for multiple APIs at one time.
+
+ - 2.x and 3.x compatible
+
+
+