Support react 17 (#125)

Author: mgreca

package.json

@@ -119,7 +119,7 @@
     "webpack-dev-server": "^3.1.8"
   },
   "peerDependencies": {
-    "react": "^15.5.4 || ^16.2.0",
-    "react-dom": "^15.5.4 || ^16.2.0"
+    "react": "^15.5.4 || ^16.2.0 || ^17.0.0",
+    "react-dom": "^15.5.4 || ^16.2.0 || ^17.0.0"
   }
 }