handle HTTP errors in twitter stream reader

[colinsurprenant]

twitter reader: rate=0/s, queue size=0, tweets count=7257700
stream reconnect timeout=10, retries=1
twitter reader: rate=0/s, queue size=0, tweets count=7257700
stream reconnect timeout=20, retries=2
/home/colin/.rvm/gems/ruby-1.9.2-p318@redwatch/gems/twitter-stream-0.1.15/lib/twitter/json_stream.rb:120:in <<': Could not parse data entirely (HTTP::Parser::Error) from /home/colin/.rvm/gems/ruby-1.9.2-p318@redwatch/gems/twitter-stream-0.1.15/lib/twitter/json_stream.rb:120:inreceive_data'
from /home/colin/.rvm/gems/ruby-1.9.2-p318@redwatch/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in run_machine' from /home/colin/.rvm/gems/ruby-1.9.2-p318@redwatch/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:inrun'
from /home/colin/service/redwatch/lib/tweitgeist/twitter/twitter_stream.rb:80:in run' from lib/tweitgeist/twitter/twitter_reader.rb:41:instart'
from lib/tweitgeist/twitter/twitter_reader.rb:77:in `

'