Copy BinaryThreshold.json to build directory
Copy BinaryThreshold.json to build directory

Fixes error with the file not being found at runtime.

OpenChemistry/tomviz,mathturtle/tomviz,OpenChemistry/tomviz,thewtex/tomviz,cryos/tomviz,mathturtle/tomviz,OpenChemistry/tomviz,cjh1/tomviz,cjh1/tomviz,thewtex/tomviz,cjh1/tomviz,cryos/tomviz,cryos/tomviz,thewtex/tomviz,mathturtle/tomviz,OpenChemistry/tomviz