Update example to use unified1 headers

Also remove the 1.1-specific example.
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index dff65d9..8b22f60 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -2,8 +2,3 @@
 	${CMAKE_CURRENT_SOURCE_DIR}/example.cpp)
 target_include_directories(SPIRV-Headers-example
 	PRIVATE ${SPIRV-Headers_SOURCE_DIR}/include)
-
-add_library(SPIRV-Headers-example-1.1
-	${CMAKE_CURRENT_SOURCE_DIR}/example-1.1.cpp)
-target_include_directories(SPIRV-Headers-example-1.1
-	PRIVATE ${SPIRV-Headers_SOURCE_DIR}/include)
diff --git a/example/example-1.1.cpp b/example/example-1.1.cpp
deleted file mode 100644
index 989d35c..0000000
--- a/example/example-1.1.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright (c) 2016 The Khronos Group Inc.
-// 
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and/or associated documentation files (the
-// "Materials"), to deal in the Materials without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Materials, and to
-// permit persons to whom the Materials are furnished to do so, subject to
-// the following conditions:
-// 
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Materials.
-// 
-// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
-// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
-// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
-//    https://www.khronos.org/registry/
-// 
-// THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
-
-// Use the SPIR-V 1.1 core instruction set, but with 1.0 versions
-// of the GLSL and OpenCL extended instruction sets.
-#include <spirv/1.0/GLSL.std.450.h>
-#include <spirv/1.0/OpenCL.std.h>
-#include <spirv/1.1/spirv.hpp>
-
-namespace {
-
-const GLSLstd450 kSin = GLSLstd450Sin;
-const OpenCLLIB::Entrypoints kNative_cos = OpenCLLIB::Native_cos;
-const spv::Op kNop = spv::OpNop;
-
-// This instruction is new in SPIR-V 1.1.
-const spv::Op kNamedBarrierInit = spv::OpNamedBarrierInitialize;
-
-}  // anonymous namespace
diff --git a/example/example.cpp b/example/example.cpp
index 222c101..d79b62f 100644
--- a/example/example.cpp
+++ b/example/example.cpp
@@ -24,9 +24,9 @@
 // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 // MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
 
-#include <spirv/1.0/GLSL.std.450.h>
-#include <spirv/1.0/OpenCL.std.h>
-#include <spirv/1.0/spirv.hpp>
+#include <spirv/unified1/GLSL.std.450.h>
+#include <spirv/unified1/OpenCL.std.h>
+#include <spirv/unified1/spirv.hpp>
 
 namespace {