update copyright

Author: larryonoff

Info.plist

@@ -21,7 +21,7 @@
 	<key>CFBundleVersion</key>
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors</string>
+	<string>Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors</string>
 	<key>NSPrincipalClass</key>
 	<string></string>
 </dict>