Added licensing and readme info

LICENSE

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+The MIT License
+
+Copyright (C) 2006, Riku 'Shrike' Lindblad
+Copyright (C) 2007, Marko Koivusalo
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

README

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+Flexget Plugins By Andrew Williams (nikdoof)
+
+output_twitter - For each entry produce a twitter posting. 
+                 Requires python-twitter 0.5 or above.

output_twitter.py

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+""" OutputTwitter - Produces a twitter post for each entry
+
+    MIT Licensed, derrivative work of Flexget module OutputEmail """
+
 import logging
 from flexget.plugin import *