chore(package.json): update `shelljs` to v0.3.0
chore(package.json): update `semver` to v3.0.1
chore(package.json): update `load-grunt-tasks` to v0.6.0
chore(package.json): update `grunt-contrib-uglify` to v0.5.1
chore(package.json): update `grunt-contrib-connect` to v0.8.0
chore(package.json): update `grunt-contrib-concat` to v0.5.0
chore(package.json): update `grunt-contrib-clean` to v0.6.0

Closes #35