Update gulp and add dev deps

gulp

@@ -1 +1 @@
-Subproject commit 349bb1f3a91a4675b5ec3e8b907d8ae2daf39129
+Subproject commit 5095dbecb4fb1ac118a599b7ed65e44adb470b8d

package.json

@@ -41,5 +41,49 @@
     "passport-local": "^1.0.0",
     "preact": "^6.4.0",
     "require-dir": "^0.3.1"
+  },
+  "devDependencies": {
+    "autoprefixer": "^6.5.1",
+    "babel-plugin-add-module-exports": "^0.2.1",
+    "babel-preset-es2015": "^6.16.0",
+    "babel-preset-es2015-node6": "^0.3.0",
+    "babel-preset-es2015-rollup": "^1.2.0",
+    "babel-preset-react": "^6.16.0",
+    "browser-sync": "^2.17.5",
+    "chalk": "^1.1.3",
+    "csswring": "^5.1.0",
+    "eslint": "^3.8.1",
+    "eslint-config-airbnb": "^12.0.0",
+    "eslint-config-airbnb-base": "^9.0.0",
+    "eslint-plugin-import": "^2.0.1",
+    "eslint-plugin-jsx-a11y": "^2.2.3",
+    "eslint-plugin-react": "^6.4.1",
+    "gulp": "github:gulpjs/gulp#4.0",
+    "gulp-babel": "^6.1.2",
+    "gulp-less": "^3.1.0",
+    "gulp-postcss": "^6.2.0",
+    "gulp-rename": "^1.2.2",
+    "gulp-sourcemaps": "^2.1.1",
+    "gulp-svgmin": "^1.2.3",
+    "gulp-uglify": "^2.0.0",
+    "gulp-util": "^3.0.7",
+    "less": "^2.7.1",
+    "lodash": "^4.16.4",
+    "mkdirp": "^0.5.1",
+    "nodemon": "^1.11.0",
+    "postcss": "^5.2.5",
+    "pretty-hrtime": "^1.0.2",
+    "rimraf": "^2.5.4",
+    "rollup": "^0.36.3",
+    "rollup-plugin-babel": "^2.6.1",
+    "rollup-plugin-commonjs": "^5.0.5",
+    "rollup-plugin-node-resolve": "^2.0.0",
+    "rollup-plugin-replace": "^1.1.1",
+    "supertest": "^2.0.1",
+    "tap-spec": "^4.1.1",
+    "tape": "^4.6.2",
+    "through2": "^2.0.1",
+    "vinyl-buffer": "^1.0.0",
+    "vinyl-source-stream": "^1.1.0"
   }
 }