Improve readme files, and add screenshot

DEVELOPERS.md

@@ -42,7 +42,7 @@ config=<package>
   (Note: Locally installed module don't show the button on the install screen)
 
 Note: Fox's Mmm use fallback 
-[here](app/src/main/java/com/fox2code/mmm/utils/PropUtils.java)
+[here](app/src/main/java/com/fox2code/mmm/utils/PropUtils.java#L21)
 for some modules  
 Theses values are only used if not defined in the `module.prop` files
 

README.md

@@ -5,30 +5,33 @@ So I made my own app to do that!
 
 **This app is not officially supported by Magisk or it's developers**
 
-# For users
+## For users
 
 Related commits:
-- [Remove online section in modules fragment](https://github.com/topjohnwu/Magisk/commit/f5c982355a2e3380b2b64af4b0caa8f4f7cf9157)
-- [Cleanup unused code](https://github.com/topjohnwu/Magisk/commit/8d59caf635591eb23813d75601039bb138f5716b)
-- [Remove DoH](https://github.com/topjohnwu/Magisk/commit/acf25aa4d31ee221354019daa097ccff579b8704)  
-*(Note: DoH was used to fix modules Downloads by preventing MiTM on DNS queries)*
+- [`Remove online section in modules fragment`](https://github.com/topjohnwu/Magisk/commit/f5c982355a2e3380b2b64af4b0caa8f4f7cf9157)
+- [`Cleanup unused code`](https://github.com/topjohnwu/Magisk/commit/8d59caf635591eb23813d75601039bb138f5716b)
 
-The app currently use these two repo as their modules sources:
+The app currently use these two repo as their modules sources:  
 [https://github.com/Magisk-Modules-Alt-Repo](https://github.com/Magisk-Modules-Alt-Repo)
 [https://github.com/Magisk-Modules-Repo](https://github.com/Magisk-Modules-Repo)
 
-As the main repo may shutting down due to the main app no longer supporting it, 
+As the main repo may shutting down due to the main app no longer supporting it.  
 I recommend submitting your modules [here](https://github.com/Magisk-Modules-Alt-Repo/submission) instead
 
 If a module is in both repo, the manager will just pick the most up to date version of the module
 
-# For developers
+## For developers
 
 The manager add and read new meta keys to modules
 
-It use `module.prop` the `minApi` and `minMagisk` properties to detect compatibility  
-And use the `support` and `donate` key to detect module related links
+It use `module.prop` the `minApi=<int>` and `minMagisk=<int>` properties to detect compatibility  
+And use the `support=<url>` and `donate=<url>` key to detect module related links
 
 It also add new ways to control the installer ui via a new command system
 
 For more information please check the [developer documentation](DEVELOPERS.md)
+
+## Screenshots
+
+Main activity:  
+[<img src="screenshot.jpg" width="250"/>](screenshot.jpg)