Merge pull request #359 from Annihil/patch-1

NSSiriUsageDescription info.plist readme addition

README.md

   <string>YOUR TEXT</string>
   <key>NSSpeechRecognitionUsageDescription</key>
   <string>YOUR TEXT</string>
+  <key>NSSiriUsageDescription</key>
+  <string>YOUR TEXT</string>
 
   <!-- … -->