Added auctex and yasnippets

.emacs.d/snippets/c++-mode/srn

@@ -0,0 +1,9 @@
+# -*- mode: snippet -*-
+# name: search_n
+# key: srn
+# --
+auto pos = std::search_n(std::begin(${1:container}), std::end($1),$2,$3);
+if (pos != std::end($1)) {
+  $4
+}
+$0