adding objc-snippets

extras/imported/objc-mode/Idioms/Responds to Selector.yasnippet

@@ -0,0 +1,11 @@
+# -*- mode: snippet -*-
+# key: responds
+# contributor: Translated from TextMate Snippet
+# name: Responds to Selector
+## condition: "source.objc, source.objc++"
+# --
+${TM_COMMENT_START} ${4:Send $2 to $1, if $1 supports it}${TM_COMMENT_END}
+if ([${1:self} respondsToSelector:@selector(${2:someSelector:})])
+{
+    [$1 ${3:${2/((:\s*$)|(:\s*))/:<>(?3: )/g}}];
+}