fix build issue

Author: isneezy

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@isneezy/vue-selectize",
-  "version": "0.1.1",
+  "version": "0.2.0",
   "main": "./dist/vue-selectize.common.js",
   "scripts": {
     "serve": "vue-cli-service serve",

src/components/VSelectize.vue

@@ -389,7 +389,7 @@ export default {
       if (this.activeOption) this.selectOption(this.activeOption)
       else if (typeof this.createItem === 'function' && this.searchText.length) {
         const option = this.createItem(this.searchText)
-        if(isPromise(option))
+        if(isPromise(option)) {
           option.then((o) => {
               this.selectOption(this.formatOption(o))
               this.setNotBusy()