Update README.md

Ralim · May 21, 2017 · 67e3c44 · 67e3c44
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@@ -48,6 +48,7 @@ Pressing both buttons will also exit the soldering mode.
 ## Settings Menu
 This menu allows you to cycle through all the options and set their values.
 The button near the tip cycles through the options, and the one near the usb changes the selected option.
+Note that settings are not saved until you exit the menu, and some settings such as screen flip do not apply until a power cycle is applied.
 
 * UVCO -> Undervoltage cut out level, settable in 1V increments from 10-24V
 * STIME -> Sleep time, how long it takes before the unit goes to sleep