update geotools release documentation

CodeHaus Comment From: victortey - Time: Wed, 11 Jul 2012 01:05:52 -0500
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I am also unsure if this is the best way to submit a patch for review as this is the first time I have used GIT. Please let me know if there are better ways of submitting a review

Thanks

CodeHaus Comment From: victortey - Time: Wed, 11 Jul 2012 01:04:23 -0500
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Hi Jody,

This is a first draft on updating the doc for releasing geotools. I have left the announcement untouched as I am unsure what needs to be update. Would you be able to perform a review. Thanks