Add an example of thread masking to the documentation
Add an example of thread masking to the documentation

stonebig/numba,sklam/numba,stonebig/numba,numba/numba,gmarkall/numba,stuartarchibald/numba,sklam/numba,gmarkall/numba,gmarkall/numba,gmarkall/numba,stonebig/numba,sklam/numba,seibert/numba,IntelLabs/numba,cpcloud/numba,seibert/numba,cpcloud/numba,sklam/numba,IntelLabs/numba,cpcloud/numba,stonebig/numba,stuartarchibald/numba,cpcloud/numba,stuartarchibald/numba,numba/numba,numba/numba,seibert/numba,seibert/numba,cpcloud/numba,IntelLabs/numba,numba/numba,stuartarchibald/numba,stonebig/numba,IntelLabs/numba,sklam/numba,seibert/numba,numba/numba,IntelLabs/numba,gmarkall/numba,stuartarchibald/numba