move to src folder

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8520530..211604c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,8 +3,8 @@
 
 # include(CTest)
 # enable_testing()
-
-add_executable(delaunator main.cpp)
+include_directories ("${PROJECT_SOURCE_DIR}/src")
+add_executable(delaunator src/main.cpp)
 
 set(CPACK_PROJECT_NAME ${PROJECT_NAME})
 set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})

src/main.cpp

diff --git a/main.cpp b/src/main.cpp
similarity index 100%
rename from main.cpp
rename to src/main.cpp