change bin/compile to use unix linefeeds

bin/compile

@@ -1,9 +1,9 @@
-#!/usr/bin/env php
-<?php
-
-require __DIR__.'/../tests/bootstrap.php';
-
-use Composer\Compiler;
-
-$compiler = new Compiler();
-$compiler->compile();
+#!/usr/bin/env php
+<?php
+
+require __DIR__.'/../tests/bootstrap.php';
+
+use Composer\Compiler;
+
+$compiler = new Compiler();
+$compiler->compile();