Remove optional dependencies from package.json, so they don't get installed by default. Version bump.

Author: hperrin

README.md

@@ -88,9 +88,14 @@ You can get PNotify using NPM. (You can also use [jsDelivr](https://www.jsdelivr
 ```sh
 npm install --save pnotify
 
-# or, if you don't want optional dependencies
+# If you plan to use Material style:
+npm install --save material-design-icons
+
+# If you plan to use the Animate module:
+npm install --save animate.css
 
-npm install --save --no-optional pnotify
+# If you plan to use the NonBlock module:
+npm install --save nonblockjs
 ```
 
 Inside the pnotify module directory:
@@ -241,7 +246,7 @@ The default, standalone theme, Bright Theme. Include the CSS file in your page:
 
 ## Material
 
-The Material Style module. Include the module in your JS, and set it as the default:
+The Material Style module. Requires [material-design-icons](https://www.npmjs.com/package/material-design-icons). Include the module in your JS, and set it as the default:
 
 ```js
 import PNotifyStyleMaterial from 'pnotify/dist/es/PNotifyStyleMaterial.js';

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "pnotify",
-  "version": "4.0.0-beta.1",
+  "version": "4.0.0-beta.2",
   "description": "Beautiful dependency free notifications.",
   "keywords": [
     "notice",
@@ -63,10 +63,5 @@
     "uglify-es": "3.3.9",
     "uglify-js": "^3.4.9"
   },
-  "optionalDependencies": {
-    "animate.css": "^3.7",
-    "material-design-icons": "^3.0",
-    "nonblockjs": "^1.0"
-  },
   "dependencies": {}
 }