Added cmake buildfile

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "deps/datcxx/cxx-tap"]
+	path = deps/heapwolf/cxx-tap
+	url = https://github.com/xloem/tap.git
+[submodule "deps/datcxx/flat-tree"]
+	path = deps/datcxx/flat-tree
+	url = https://github.com/xloem/flat-tree.git

CMakeLists.txt

@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 3.10)
+
+project(hypercore)
+
+execute_process(COMMAND git submodule update --init --recursive WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+
+add_subdirectory(deps/datcxx/flat-tree)
+add_subdirectory(deps/heapwolf/cxx-tap)
+
+add_library(${PROJECT_NAME} index.cxx)
+target_link_libraries(${PROJECT_NAME} timers eventemitter tap)
+
+target_include_directories(${PROJECT_NAME} INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/..)
+install(FILES index.hxx DESTINATION include/${PROJECT_NAME})
+
+include(CTest)
+if(BUILD_TESTING)
+	add_executable(${PROJECT_NAME}-test test/index.cxx)
+	target_link_libraries(${PROJECT_NAME}-test ${PROJECT_NAME})
+	add_test(NAME ${PROJECT_NAME} COMMAND ${PROJECT_NAME}-test)
+endif()

index.cxx

@@ -1,8 +1,10 @@
 #include "index.hxx"
 #include "deps/datcxx/flat-tree/index.hxx"
 
-namespace Hypercore {
-  size_t getIndex () {
-    return flatTree::index(0, 0);
-  }
-} // namespace Hypercore
+namespace Hyper {
+  namespace Core {
+    size_t getIndex () {
+      return FlatTree::index(0, 0);
+    }
+  } // namespace Core
+} // namespace Hyper