Add more applescript samples

samples/AppleScript/Get User Name.applescript

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+(*
+Get User Name
+
+This script uses UI element scripting to get the name for the
+current user.
+
+If "Enable access for assistive devices" is not checked,
+this script will open the Universal Access System Preference and ask
+the user to check the checkbox.
+
+Copyright 2007 Apple Inc.
+
+You may incorporate this Apple sample code into your program(s) without
+restriction.  This Apple sample code has been provided "AS IS" and the
+responsibility for its operation is yours.  You are not permitted to
+redistribute this Apple sample code as "Apple sample code" after having
+made changes.  If you're going to redistribute the code, we require
+that you make it clear that the code was descended from Apple sample
+code, but that you've made changes.
+*)
+
+tell application "System Preferences"
+	activate
+	set current pane to pane "com.apple.preferences.users"
+end tell
+
+tell application "System Events"
+	if UI elements enabled then
+		tell tab group 1 of window "Accounts" of process "System Preferences"
+			click radio button 1
+			delay 2
+			get value of text field 1
+		end tell
+	else
+		tell application "System Preferences"
+			activate
+			set current pane to pane "com.apple.preference.universalaccess"
+			display dialog "UI element scripting is not enabled. Check \"Enable access for assistive devices\""
+		end tell
+	end if
+end tell