Add bin file

Author: Greg Bowler

bin/build

@@ -0,0 +1,5 @@
+#!/usr/bin/env php
+<?php
+require(__DIR__ . "/../vendor/autoload.php");
+array_shift($argv);
+call_user_func_array([Gt\Build\BuildRunner::class, "run"],$argv);

composer.json

@@ -22,5 +22,9 @@
 		"psr-4": {
 			"Gt\\Build\\Test\\": "./test/unit"
 		}
+	},
+
+	"bin": {
+		"bin/build"
 	}
 }