Fix #29 add Tenancy facade

tests/FacadeTest.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Stancl\Tenancy\Tests;
+
+use Stancl\Tenancy\TenancyFacade as Tenancy;
+
+class FacadeTest extends TestCase
+{
+    /** @test */
+    public function tenant_manager_can_be_accessed_using_the_Tenancy_facade()
+    {
+        tenancy()->put('foo', 'bar');
+        Tenancy::put('abc', 'xyz');
+
+        $this->assertSame('bar', Tenancy::get('foo'));
+        $this->assertSame('xyz', Tenancy::get('abc'));
+    }
+}