Updated FreeScout Modules Dev (markdown)

FreeScout-Modules-Dev.md

@@ -124,7 +124,7 @@ Retrieving variables in JS:
 alert(Vars.hello_world);
 ```
 
-### Routes
+## Routes
 
 Routes configuration is located in `/Modules/ModuleName/Http/routes.php`
 
@@ -158,6 +158,25 @@ Module's public files can be added to the application in the module's service pr
 }, 20, 1);
 ```
 
+## Extra service providers:
+`module.json`:
+```
+    "providers": [
+        "Modules\\SampleModule\\Providers\\ExtraProvider"
+    ],
+```
+Service provider from module's `vendor`:
+```
+    "providers": [
+        "\\Service\\Provider\\PathProvider"
+    ],
+```
+and add to the main service provier:
+```
+// It has to be included here to require vendor service providers in module.json
+require_once __DIR__.'/../vendor/autoload.php';
+```
+
 ## Module Composer Dependencies
 
 Module may include composer packages in it's `composer.json`: