chore: add @vue/composition-api as an optional peerDependency

Author: eunjae-lee

package.json

@@ -52,8 +52,14 @@
   "peerDependencies": {
     "algoliasearch": ">= 3.32.0 < 5",
     "vue": "^2.6.0 || >=3.0.0-rc.0",
+    "@vue/composition-api": "^1.0.0-beta.1",
     "vue-server-renderer": "^2.6.11"
   },
+  "peerDependenciesMeta": {
+    "@vue/composition-api": {
+      "optional": true
+    }
+  },
   "devDependencies": {
     "@storybook/addon-actions": "3.4.11",
     "@storybook/addon-knobs": "3.4.11",