clang-format: proper c++ standard

Change-Id: I9828093a08ed8b4c2a11f482f674368ac137d4dc
diff --git a/.clang-format b/.clang-format
index a11c325..8c68525 100644
--- a/.clang-format
+++ b/.clang-format
@@ -515,7 +515,7 @@
 SpacesInCStyleCastParentheses: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-Standard: Cpp03
+Standard: Cpp11
 TabWidth: 8
 UseTab: Always
 ...