Added a testing sign in method for Redux.

components/signin.component.jsx

@@ -0,0 +1,36 @@
+import React from "react";
+import { View, Text, Button } from "react-native";
+import { createStructuredSelector } from "reselect";
+
+import {
+  selectBodyshop,
+  selectCurrentUser,
+} from "../redux/user/user.selectors";
+import { emailSignInStart } from "../redux/user/user.actions";
+import { connect } from "react-redux";
+
+const mapStateToProps = createStructuredSelector({
+  bodyshop: selectBodyshop,
+  currentUser: selectCurrentUser,
+});
+
+const mapDispatchToProps = (dispatch) => ({
+  emailSignInStart: (email, password) =>
+    dispatch(emailSignInStart({ email, password })),
+});
+
+export function SignIn({ bodyshop, currentUser, emailSignInStart }) {
+  return (
+    <View>
+      <Text>The secondary view</Text>
+      <Text>{JSON.stringify(currentUser)}</Text>
+      <Button title="Testing." onPress={() => console.log("test")} />
+      <Button
+        title="Sign In"
+        onPress={() => emailSignInStart("patrick@imex.dev", "patrick")}
+      />
+    </View>
+  );
+}
+
+export default connect(mapStateToProps, mapDispatchToProps)(SignIn);