Add Provider component

src/shared/store/provider.jsx

@@ -0,0 +1,18 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+class Provider extends React.PureComponent {
+  getChildContext() {
+    return { store: this.props.store };
+  }
+
+  render() {
+    return React.Children.only(this.props.children);
+  }
+}
+
+Provider.childContextTypes = {
+  store: PropTypes.any,
+};
+
+export default Provider;