Release Candidate - 1

Good tag to get back to in case of last minute issues...
Known issues: 1. If a #hashtag is not found in a tweet, it will be considered neutral for that #hashtag.
2. A typo error in the email-id cannot be corrected -
Maybe get the email twice and make sure they are identical before accepting the email-id?
3. Classification can be a little haywire, especially for other language tweets or tweets that use words not strictly in the dictionary/training database