Update readme to use package json scripts (#8)

README.md

@@ -10,8 +10,8 @@
 2. Start the development server:
 
     ```bash
-    # gulp
-    gulp
+    # Using gulp
+    npm run dev
     ```
 
    Now you should be able to see the project running at [localhost:3000](http://localhost:3000).
@@ -21,7 +21,7 @@
 ## For production
 
 ```bash
-# gulp
-gulp build
+# Using gulp
+npm run build
 
-```
+```

package-lock.json

@@ -1447,10 +1447,14 @@
       }
     },
     "node_modules/caniuse-lite": {
-      "version": "1.0.30001192",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001192.tgz",
-      "integrity": "sha512-63OrUnwJj5T1rUmoyqYTdRWBqFFxZFlyZnRRjDR8NSUQFB6A+j/uBORU/SyJ5WzDLg4SPiZH40hQCBNdZ/jmAw==",
-      "dev": true
+      "version": "1.0.30001283",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001283.tgz",
+      "integrity": "sha512-9RoKo841j1GQFSJz/nCXOj0sD7tHBtlowjYlrqIUS812x9/emfBLBt6IyMz1zIaYc/eRL8Cs6HPUVi2Hzq4sIg==",
+      "dev": true,
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/browserslist"
+      }
     },
     "node_modules/caw": {
       "version": "2.0.1",
@@ -11551,9 +11555,9 @@
       }
     },
     "caniuse-lite": {
-      "version": "1.0.30001192",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001192.tgz",
-      "integrity": "sha512-63OrUnwJj5T1rUmoyqYTdRWBqFFxZFlyZnRRjDR8NSUQFB6A+j/uBORU/SyJ5WzDLg4SPiZH40hQCBNdZ/jmAw==",
+      "version": "1.0.30001283",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001283.tgz",
+      "integrity": "sha512-9RoKo841j1GQFSJz/nCXOj0sD7tHBtlowjYlrqIUS812x9/emfBLBt6IyMz1zIaYc/eRL8Cs6HPUVi2Hzq4sIg==",
       "dev": true
     },
     "caw": {