Highlight #selector keyword [SE-0022]

Akshay Hegde · Akshay Hegde · commit 03140ad4832e · 2016-04-24T11:43:10.000-07:00
From swift-evolution: https://github.com/apple/swift-evolution/blob/master/proposals/0022-objc-selectors.md
diff --git a/syntax/swift.vim b/syntax/swift.vim
@@ -227,6 +227,7 @@ syntax keyword swiftPreprocessor
       \ #elseif
       \ #else
       \ #endif
+      \ #selector
 
 
 " Comment patterns
