Add react and react-dom as peer dependencies (#232)

Author: yoyo837

.gitignore

@@ -26,3 +26,4 @@ lib
 es
 coverage
 yarn.lock
+package-lock.json

package.json

@@ -63,5 +63,9 @@
     "rc-align": "^4.0.0",
     "rc-motion": "^2.0.0",
     "rc-util": "^5.5.0"
+  },
+  "peerDependencies": {
+    "react": ">=16.9.0",
+    "react-dom": ">=16.9.0"
   }
 }