fixed compilation and added cmake

.gitignore

@@ -30,3 +30,7 @@
 *.exe
 *.out
 *.app
+
+#execlude cmake
+build
+.vscode

CMakeLists.txt

@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.0.0)
+project(iterative_closest_point VERSION 0.1.0)
+
+add_executable( iterative_closest_point 
+                src/main.cpp 
+                src/ICP.cpp 
+                src/KdTree.cpp 
+                src/svd.cpp )
+

src/KdTree.cpp

@@ -1,4 +1,5 @@
 #include "KdTree.h"
+#include <math.h>
 
 gs::Point::Point()
 {

src/main.cpp

@@ -93,8 +93,9 @@ void icpExample()
 	printf("Alignment Error: %0.5f \n", alignmentError);
 }
 
-void main()
+int main()
 {
 	icpExample();
 	system("pause");
+	return 0;
 }