Corrected functions dealing with StructureChains. (#253)

+ adjusted readme.md accordingly
+ added (a first!) test project

tests/StructureChain/CMakeLists.txt

@@ -0,0 +1,35 @@
+# Copyright(c) 2018, NVIDIA CORPORATION. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+cmake_minimum_required(VERSION 3.2)
+
+project(StructureChain)
+
+set(HEADERS
+)
+
+set(SOURCES
+  StructureChain.cpp
+)
+
+source_group(headers FILES ${HEADERS})
+source_group(sources FILES ${SOURCES})
+
+add_executable(StructureChain
+  ${HEADERS}
+  ${SOURCES}
+)
+
+set_target_properties(StructureChain PROPERTIES FOLDER "Tests")
+target_link_libraries(StructureChain "$ENV{VK_SDK_PATH}/Lib/vulkan-1.lib")