P5-3631 - Fix lint issues and use eslint on build

package.json

@@ -8,13 +8,16 @@
   },
   "devDependencies": {
     "browserify": "^13.1.1",
+    "del": "^3.0.0",
     "eslint": "^5.14.1",
     "gulp": "^3.9.0",
-    "gulp-jshint": "^2.0.4",
+    "gulp-eslint": "^5.0.0",
     "gulp-qunit": "^1.5.0",
     "gulp-rename": "^1.2.2",
     "jshint": "^2.9.5",
+    "mkdirp": "^0.5.1",
     "qunit": "^1.0.0",
+    "run-sequence": "^2.2.1",
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^1.1.0"
   },