broke classes into their own files

src/loaders/helpers.cpp

@@ -0,0 +1,11 @@
+//
+// Created by phanes on 4/22/17.
+//
+
+#include "helpers.h"
+
+bool exists(const std::string& name)
+{
+    struct stat buffer;
+    return (stat (name.c_str(), &buffer) == 0);
+}