merged from master and relocate headers inside srcs

srcs/utils.hpp

@@ -0,0 +1,16 @@
+
+#ifndef UTILS_HPP
+# define UTILS_HPP
+
+# include <vector>
+# include <string>
+# include <sstream>
+# include <cstdlib>		// atoi
+
+std::vector<std::string>    split(std::string input, char delimiter);
+bool                        isNumeric(std::string str);
+bool                        isNumeric_btw(int low, int high, std::string str);
+std::string					itos(int n);
+std::string					trim(std::string str, char c);
+
+#endif