allow React 17 as peer dependency

Author: avkonst

package.json

@@ -36,7 +36,7 @@
     },
     "dependencies": {},
     "peerDependencies": {
-        "react": "^16.8.6"
+        "react": "^16.8.6 || ^17.0.0"
     },
     "devDependencies": {
         "@babel/core": "7.9.6",