improve upgrading chapter in README

README.md

@@ -282,6 +282,14 @@ This is needed to regenerate index.\*.js files which includes `require` calls to
 After this you can use a new image in your cljs code.
 
 ## Upgrading existing Re-Natal project
+
+#### Upgrading React Native version
+
+To upgrade React Native to newer version please follow the official
+[Upgrading](https://facebook.github.io/react-native/docs/upgrading.html) guide of React Native.
+Re-Natal makes almost no changes to the files generated by react-native so the official guide should be valid.
+
+#### Upgrading Re-Natal CLI version
 Do this if you want to use newer version of re-natal.
 
 Commit or backup your current project, so that you can restore it in case of any problem ;)
@@ -304,10 +312,6 @@ Then to continue development using figwheel
 $ re-natal use-figwheel
 ```
 
-To upgrade React Native to newer version please follow the official
-[Upgrading](https://facebook.github.io/react-native/docs/upgrading.html) guide of React Native.
-Re-Natal makes almost no changes to the files generated by react-native so the official guide should be valid.
-
 ### Enabling source maps when debugging in chrome
 To make source maps available in "Debug in Chrome" mode re-natal patches
 the react native packager to serve \*.map files from file system and generate only index.\*.map file.