Update Plugins.md

Plugins.md

@@ -3,7 +3,7 @@
 The *Task* entities defined in a *Processor* definition can be implemented as dedicated native java plugins or as scripts written in *Perl*, *Python* or *Shell* scripting languages.
 
 
-## Native plugins
+## Native plugins ##
 
 Dedicated native java plugins can be developed by implementing the GenericTaskInterface process method defined in the DES library
 
@@ -60,3 +60,10 @@ Note: Note: args[0] is the class name
  
  
  
+## Script plugins ##
+ 
+ 
+If a given *Task* is implemented with a scripting language, the script must consider the following input parameters:
+```
+[BASE_PATH] [AOI] [PROCESSOR] [FileType 
+```