chore: bump to beta3
chore: bump to beta3

 - must have forgotten to --save :sob:

dmacfarlane/ng2-material,paulussup/ng2-material,mailiam/ng2-material,dmacfarlane/ng2-material,parmalatinter/ng2-material,Q-Free-OpenRoads/ng2-material,mailiam/ng2-material,mailiam/ng2-material,parmalatinter/ng2-material,Q-Free-OpenRoads/ng2-material,paulussup/ng2-material,paulussup/ng2-material,Q-Free-OpenRoads/ng2-material,parmalatinter/ng2-material,Q-Free-OpenRoads/ng2-material,dmacfarlane/ng2-material