Updated README.
Updated README.

jbeard4/SCION,mattoshry/SCION-CORE,mattoshry/SCION-CORE,mattoshry/SCION-CORE,mattoshry/SCION,mattoshry/SCION,mattoshry/SCION-CORE,jbeard4/SCION,jbeard4/SCION-CORE,mattoshry/SCION-CORE,jbeard4/SCION,mattoshry/SCION