[Dev Deps] update `babel-plugin-istanbul`, `chai`, `cross-env`, `eslint-config-airbnb`, `eslint-plugin-import`, `eslint-plugin-jsx-a11y`, `karma`, `karma-firefox-launcher`, `mocha`, `node-sass`, `sinon`, `nyc`
[Dev Deps] update `babel-plugin-istanbul`, `chai`, `cross-env`, `eslint-config-airbnb`, `eslint-plugin-import`, `eslint-plugin-jsx-a11y`, `karma`, `karma-firefox-launcher`, `mocha`, `node-sass`, `sinon`, `nyc`
tombatossals/react-dates,airbnb/react-dates,tombatossals/react-dates