shebang support added

ml.cpp

@@ -1886,6 +1886,12 @@ int main(int argc, char *argv[]) {
 			std::vector<std::string> files = getCmdOption(argv, argc, "-f");
 	    	for (size_t i = 0; i < files.size(); i++)
 				run(read_file_contents(files[i]), env);
+		// just one parameter - filename
+		} else if (argc == 2) {
+			std::string file_content = read_file_contents(argv[1]);
+			if (file_content.find("#!") == 0)	// shebang ?
+				file_content.erase(0, file_content.find("\n") + 1);		// TODO mac osx newline??
+			run(file_content, env);
 		// repl
 		} else {
 			repl(env);