v1.5.0

Enhancements
------------

- Allow removing individual toasts
  ```js
  let item = this.toast.info('hello');
  this.toast.remove(item);
  ```
- Allow clearing individual toasts
  ```js
  let item = this.toast.info('hello');
  this.toast.clear(item);
  ```
- Save toasts to the `toasts` property and auto remove when hidden

Thanks to @baseballlover723 for PR #11

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ember-toastr",
-  "version": "1.4.1",
+  "version": "1.5.0",
   "description": "Ember wrapper for Toastr.js notifications",
   "directories": {
     "doc": "doc",