Fix for voloko#27 - 'Could not parse data entirely'

The parser needs to be reset in case of reconnection, or you'll get a
HTTP::Parser::Error.

lib/twitter/json_stream.rb

@@ -205,7 +205,9 @@ def reset_state
       @state   = :init
       @buffer  = BufferedTokenizer.new("\r", MAX_LINE_LENGTH)
       @stream  = ''
+   end
 
+   def reset_parser
       @parser  = Http::Parser.new
       @parser.on_headers_complete = method(:handle_headers_complete)
       @parser.on_body = method(:receive_stream_data)
@@ -238,6 +240,8 @@ def receive_stream_data(data)
     end
 
     def send_request
+      reset_parser
+
       data = []
       request_uri = @options[:path]