Update devDependencies for React Native 0.59.4

Christopher J. Brody · Christopher J. Brody · commit 42fd299d16a3 · 2019-04-09T17:27:04.000-04:00
diff --git a/templates/general.js b/templates/general.js
@@ -88,7 +88,7 @@ ${name};
     const devDependencies =
       `{
     "react": "^16.5.0",
-    "react-native": "0.59.3"` +
+    "react-native": "^0.59.4"` +
         (withWindows
           ? `,
     "react-native-windows": "^0.57.1"`
