added forgotten header file
added forgotten header file

gidden/cyclus,mbmcgarry/cyclus,mbmcgarry/cyclus,gidden/cyclus,rwcarlsen/cyclus,hodger/cyclus,rwcarlsen/cyclus,Baaaaam/cyclus,hodger/cyclus,Baaaaam/cyclus,rwcarlsen/cyclus,hodger/cyclus,mbmcgarry/cyclus,gidden/cyclus,hodger/cyclus,rwcarlsen/cyclus,Baaaaam/cyclus,mbmcgarry/cyclus,gidden/cyclus,hodger/cyclus