Merge pull request #133 from nhaehnle/buildHeader-spv15

buildHeaders: update version to SPIR-V 1.5
diff --git a/tools/buildHeaders/header.cpp b/tools/buildHeaders/header.cpp
index e1e05d0..0f65291 100644
--- a/tools/buildHeaders/header.cpp
+++ b/tools/buildHeaders/header.cpp
@@ -69,7 +69,7 @@
         TPrinter();
 
         static const int         DocMagicNumber = 0x07230203;
-        static const int         DocVersion     = 0x00010400;
+        static const int         DocVersion     = 0x00010500;
         static const int         DocRevision    = 1;
         #define DocRevisionString                "1"
         static const std::string DocCopyright;