Update package and travis

.travis.yml

@@ -1,32 +1,14 @@
 language: node_js
 node_js:
- - "5.8.0"
-  
-before_script:
+  - "lts/*"
+cache:  
+  directories:
+    - "node_modules"
+sudo: false
+install:
   - npm install --global gulp-cli
-  - sleep 3
-  - npm install --save-dev gulp
-  - npm install --save-dev gulp-jshint
-  - npm install --save-dev jshint
-  - npm install --save-dev gulp-if
-  - npm install --save-dev gulp-concat
-  - npm install --save-dev gulp-uglify
-  - npm install --save-dev gulp-clean-css
-  - npm install --save-dev gulp-ng-annotate
-  - npm install --save-dev gulp-bytediff
-  - npm install --save-dev gulp-cdnizer
-  - npm install --save-dev gulp-remove-code
-  - npm install --save-dev merge-stream
-  - npm install --save-dev del
-  - npm install --save-dev gulp-zip
-  - npm install --save-dev gulp-gzip
-  - npm install --save-dev gulp-htmlmin
-  - npm install --save-dev gulp-replace
-  - npm install --save-dev fs
-  - npm install --save-dev gulp-smoosher
-  - npm install gulp
-  
-
+  - npm install --global gulp@4.0.0
+  - npm install
 script:
   - echo "build index.html"
   - gulp package

package.json

@@ -2,29 +2,31 @@
   "name": "ESP3D-WebUI",
   "description": "Web UI for ESP3D",
   "devDependencies": {
-    "del": "^2.2.2",
-    "deprecated": "0.0.1",
-    "fs": "0.0.1-security",
-    "gulp": "github:gulpjs/gulp#4.0",
-    "gulp-bytediff": "^1.0.0",
-    "gulp-cdnizer": "^1.1.7",
-    "gulp-clean-css": "^2.4.0",
-    "gulp-concat": "^2.6.1",
-    "gulp-gzip": "^1.4.2",
-    "gulp-htmlmin": "^3.0.0",
-    "gulp-if": "^2.0.2",
-    "gulp-jshint": "^2.1.0",
-    "gulp-ng-annotate": "^2.1.0",
-    "gulp-remove-code": "^1.0.2",
-    "gulp-replace": "^0.5.4",
-    "gulp-smoosher": "0.0.9",
-    "gulp-uglify": "^2.1.2",
-    "gulp-util": "^3.0.1",
-    "gulp-zip": "^3.2.0",
-    "jshint": "^2.9.5",
-    "merge-stream": "^1.0.1"
+    "del": "latest",
+    "deprecated": "latest",
+    "fs": "latest",
+    "gulp": "^4.0.0",
+    "gulp-bytediff": "latest",
+    "gulp-cdnizer": "latest",
+    "gulp-clean-css": "latest",
+    "gulp-concat": "latest",
+    "gulp-gzip": "latest",
+    "gulp-htmlmin": "latest",
+    "gulp-if": "latest",
+    "gulp-jshint": "latest",
+    "gulp-ng-annotate": "latest",
+    "gulp-remove-code": "latest",
+    "gulp-replace": "latest",
+    "gulp-smoosher": "latest",
+    "gulp-uglify": "latest",
+    "gulp-zip": "latest",
+    "jshint": "latest",
+    "merge-stream": "latest"
   },
   "repository": "https://github.com/luc-github/ESP3D-WEBUI",
   "author": "Luc LEBOSSE",
-  "license": "(ISC OR GPL-3.0)"
+  "license": "(ISC OR GPL-3.0)",
+  "dependencies": {
+    "global": "^4.3.2"
+  }
 }