chore(package): update scratch-vm to version 0.2.0-prerelease.20181015172627
chore(package): update scratch-vm to version 0.2.0-prerelease.20181015172627

Closes #3376
cwillisf/scratch-gui,LLK/scratch-gui,cwillisf/scratch-gui,cwillisf/scratch-gui,LLK/scratch-gui