update readmes to describe new alert and event format
require the field original_string to exist in all messages
include protocol and ip addresses in sourcefire original_string
flatten alerts document by removing triggered object
Multiple changes to how Alert Adapters work:

* All Adapters set a "description" field which is a human friendly representation of the alert for display in a UI or ticketing system
* All Adpaters set "priority" to "MED" for now.
* Unused fields removed from the alert document
add additional tests for BasicSourceFireParser
remove text before sid in sourcefire message in original_string
fix description field for AllAlertAdapter
add logging for PacketInfo and use getPacketTimeInNanos() to generate ES ts_micro
fix bug in PcapParserBolt where timePrecisionDivisor is always 1
sort complete pcap service result set by timestamp instead of just each pcap id
 include pcap service in build