Get XToDo plugin working in Xcode 6.2

AddXcodeUUIDToPlugin

Gets this: https://github.com/trawor/XToDo working in Xcode 6.2.  
  
    defaults read /Applications/Xcode.app/Contents/Info DVTPlugInCompatibilityUUID
    
    (Or just open Xcode's Info.plist file and find it there.)

This returns Xcode's DVTPlugInCompatibilityUUID, something like:

    AAAAAAAA-BBBB-CCCC-DDDD-EEEEEEEEEEEE

Then put that UUID into the plugin's Info.plist file.

  ~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/XToDo.xcplugin/Contents/Info.plist
  
  ...
  <key>DVTPlugInCompatibilityUUIDs</key>
	<array>
		<string>AAAAAAAA-BBBB-CCCC-DDDD-EEEEEEEEEEEE</string>
    (A few others are already here. Leave them in place but shouldn't matter much)
	</array>
  ...
  
  (Can also use /usr/libexec/PlistBuddy to add the UUID.)