Fixed some issues with compiling and added a .gitignore file

.gitignore

@@ -0,0 +1,3 @@
+main.d
+obj/*
+Shot-Gun-Pete

src/include/main.h

@@ -0,0 +1 @@
+#include <iostream>

src/main.cpp

@@ -0,0 +1,6 @@
+#include "include/main.h"
+
+int main (){
+
+  return 0;
+}