fix test group name

wkh237 · wkh237 · commit 868c1d6ea2d5 · 2016-06-15T11:11:10.000+08:00
diff --git a/test/test-0.5.1.js b/test/test-0.5.1.js
@@ -183,7 +183,7 @@ describe('Upload and download at the same time', (report, done) => {
 })
 
 RNTest.config({
-  group : '0.5.x',
+  group : '0.5.1',
   run : true,
   expand : false,
   timeout : 30000,
