Build a basic "hello world" with CMake

src/cppchallenge.cpp

@@ -0,0 +1,8 @@
+#include<iostream>
+
+int main(int argc, char *argv[]){
+   std::cout << "Hello World!" << std::endl;
+   return 0;
+}
+
+//  vim: set ts=4 expandtab :