chore: update v1.1.0

Author: Sohee Lee

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@toast-ui/vue-editor",
-  "version": "1.0.4",
+  "version": "1.1.0",
   "description": "TOAST UI Editor for Vue",
   "main": "dist/toastui-vue-editor.js",
   "files": [
@@ -40,6 +40,9 @@
     "webpack": "^4.17.2",
     "webpack-cli": "^3.1.0"
   },
+  "peerDependencies": {
+    "vue": "^2.5.0"
+  },
   "dependencies": {
     "tui-editor": "^1.3.0"
   }