Add missing copyright header
Add missing copyright header

garg/examplepressure,Bercon/glbrush.js,garg/glbrush.js,garg/glbrush.js,garg/examplepressure,Oletus/glbrush.js,Oletus/glbrush.js,garg/glbrush.js,garg/glbrush.js,garg/examplepressure,Bercon/glbrush.js,garg/examplepressure,Oletus/glbrush.js,Bercon/glbrush.js,Bercon/glbrush.js