composer: used Tester 2

dg · dg · commit fe8c55ff2b97 · 2016-05-17T22:25:55.000+02:00
diff --git a/composer.json b/composer.json
@@ -19,7 +19,7 @@
 	},
 	"require-dev": {
 		"nette/di": "~2.3",
-		"nette/tester": "~1.3"
+		"nette/tester": "~2.0"
 	},
 	"autoload": {
 		"classmap": ["src"],
