Fixed environment variables not being expanded in ps script in appveyor config
Fixed environment variables not being expanded in ps script in appveyor config

a1lu/Criterion,am11/Criterion,a1lu/Criterion,a1lu/Criterion,offa/Criterion,am11/Criterion,kaidowei/Criterion,a1lu/Criterion,Snaipe/Criterion,kaidowei/Criterion,am11/Criterion,kaidowei/Criterion,offa/Criterion,am11/Criterion,offa/Criterion,Snaipe/Criterion,offa/Criterion,am11/Criterion,a1lu/Criterion,Snaipe/Criterion,Snaipe/Criterion,kaidowei/Criterion,offa/Criterion,Snaipe/Criterion,kaidowei/Criterion