added setup notes for access point

micropython_firmware/setup_notes.txt

@@ -9,12 +9,20 @@ Setting up webrepl:
   >>> import webrepl_setup
   -> enable, set password and reboot
 
-  Connect to wifi:
+  Connect to local wifi:
   >>> import network
   >>> sta_if = network.WLAN(network.STA_IF)
   >>> sta_if.active(True)
   >>> sta_if.connect("<SSID>", "<PW>")
-  >>> sta_if.ifconfig() # this prints your IP
+  >>> sta_if.ifconfig() # this prints the IP
+
+  Use access point to connect:
+  >>> import network
+  >>> ap_if = network.WLAN(network.AP_IF)
+  >>> ap_if.active(True)
+  >>> ap_if.ifconfig() # this prints the IP
+
+  Default passwort for the access point: micropythoN
 
 Connect via online Webrepl:
   -> http://micropython.org/webrepl