deps - gulp in dev deps only

package.json

@@ -93,8 +93,6 @@
     "extensionizer": "^1.0.0",
     "fast-json-patch": "^2.0.4",
     "fast-levenshtein": "^2.0.6",
-    "gulp": "github:gulpjs/gulp#4.0",
-    "gulp-eslint": "^4.0.0",
     "hat": "0.0.3",
     "human-standard-token-abi": "^1.0.2",
     "idb-global": "^2.1.0",
@@ -190,6 +188,7 @@
     "gulp-util": "^3.0.7",
     "gulp-watch": "^4.3.5",
     "gulp-zip": "^4.0.0",
+    "gulp-eslint": "^4.0.0",
     "isomorphic-fetch": "^2.2.1",
     "jsdom": "^11.1.0",
     "jsdom-global": "^3.0.2",