chore(pkg): autoprefixer 7.1.5, gulp-imagemin 3.4.0, mocha 4.0.1, superagent 3.6.3
chore(pkg): autoprefixer 7.1.5, gulp-imagemin 3.4.0, mocha 4.0.1, superagent 3.6.3

localnerve/react-pwa-boilerplate,localnerve/react-pwa-reference,localnerve/react-pwa-boilerplate,localnerve/react-pwa-reference