README: Mention POWER as altenative to HOME

fixes d0k3#449

README.md

@@ -31,7 +31,7 @@ GodMode9 is designed to be intuitive, buttons leading to the results you'd expec
 * __\<R> button__: The \<R> button is the 'switch' button. It switches buttons to their secondary function. Notable exceptions are \<R+L> for a screenshot (works almost anywhere), \<R+LEFT> / \<R+RIGHT> to switch panes and \<R+DOWN> to reload the file listing.
 * __\<START> button__: Use the \<START> button to reboot from GodMode9. Use \<R+START> to poweroff your 3DS.
 * __\<SELECT> button__: The \<SELECT> button clears or restores the clipboard (depending on if it's empty or not).
-* __\<HOME> button__: The \<HOME> button enters the HOME menu, including the scripts / payloads submenus, options for formatting the SD, setting the RTC, and more.
+* __\<HOME> button__: The \<HOME> button enters the HOME menu, including the scripts / payloads submenus, options for formatting the SD, setting the RTC, and more. The \<POWER> button is an alternative way of entering the HOME menu.
 * __\<R+UP> combo__: This little known keycombo, when held at startup, pauses the GodMode9 boot so that you can stare at the splash screen for a little longer.
 * __\<R+LEFT> combo__: If you have installed GodMode9 as your bootloader, this keycombo enters the bootmenu. Hold on startup! If you built GodMode9 as SALTMODE and have it as a bootloader, the keycombo is simply the \<START> button.