feat(build): update npm package for example site during build
feat(build): update npm package for example site during build

Add another *grunt copy* task from `dist/` to
`modules/site/node_modules/ng2-material` at end of build process
Q-Free-OpenRoads/ng2-material,Q-Free-OpenRoads/ng2-material,Q-Free-OpenRoads/ng2-material,Q-Free-OpenRoads/ng2-material