feat(package.json): add support for React 17

fix #261

Author: arturbien

package.json

@@ -38,8 +38,8 @@
     "docs:build": "docz build"
   },
   "peerDependencies": {
-    "react": "^16.8.2",
-    "react-dom": "^16.8.2",
+    "react": "^16.8.2 || ^17.0.0",
+    "react-dom": "^16.8.2 || ^17.0.0",
     "styled-components": "^5.0.0"
   },
   "devDependencies": {