added checklist for AsyncIP exe

clients/opal/udp_readme.txt

@@ -37,6 +37,31 @@ Development tab -> Compiler -> Compiler Command (makefile) add the following com
 max umber of values in UDP packets:
 there’s a „#define“ inside the AsyncIP implementation which must be changed accordingly.
 The #define is in file: model_directory/include/config.h There you will find a directive called MAX_VALUES.
+
+---------------------------------------------------
+AsyncIP executable 
+
+- During ***Build the model*** a message should be printed:
+	### Created executable: AsyncIP
+
+- After the simulation stop
+	AsyncIP may still stay alive after the simulation stop. You have to remove it manually because the next simulation start will not be able to start the new AsyncIP.
+
+# Kill running AsyncIP on OPAL
+
+1. Start putty.exe
+
+2. Connect to OPAL by using the existing profiles
+	- make sure that you are in the proper folder by  
+		$ ll
+   
+3. Kill all running processes with name 'AsyncIP'
+
+	$ killall AsyncIP
+
+4. Logout from OPAL
+
+	$ exit
+
 ---------------------------------------------------
 
-