Fixes #22 add typescript definitions

Author: agentschmitt

package.json

@@ -15,6 +15,7 @@
     "lintfix": "eslint --fix --ext .js,.vue src examples-src build"
   },
   "main": "dist/vue-autonumeric.min.js",
+  "typings": "types/index.d.ts",
   "readmeFilename": "README.md",
   "keywords": [
     "autonumeric",

types/index.d.ts

@@ -0,0 +1,9 @@
+import Vue from 'vue';
+
+export default class VueAutonumeric extends Vue {
+    public value: number | null | string;
+    public options: object | string | object[] | string[];
+    public resetOnOptions: boolean;
+    public placeholder: string;
+    public tag: string;
+}