modified UDPEchoClient2.c to send multiple packets
updated to packetDemo to send many packets
added checksum code
First cut at Telemetry Object code
fixed checksum code
Merge branch 'master' of https://github.com/HEROES-GSFC/SAS
added packetDemo to PYAS-core, modified ImperxStream to grab temperature
first cut at commanding class
Merge pull request #7 from ehsteve/master

First cut at TelemetryStream and Commanding Classes