Renamed 'math-helpers.hpp' to 'sign.hpp' and updated main.cpp to reflect the change

includes/sign.hpp

@@ -0,0 +1,8 @@
+#ifndef _MATH_HELP
+#define _MATH_HELP
+int signum(int num) {
+	int retval = 0;
+	(num > 0) ? retval = 1 : retval = -1;
+	return retval;
+}
+#endif

main.cpp

@@ -5,7 +5,7 @@
 #include "includes/paddle.hpp"
 #include "includes/ball.hpp"
 #include "includes/easysock.hpp"
-#include "includes/math-helpers.hpp"
+#include "includes/sign.hpp"
 #include "includes/connect-helpers.hpp"
 #include "includes/client.hpp"
 #include "includes/server.hpp"