chore(RNTester): point at latest branch (microsoft#1355)

rozele · web-flow · commit d7118b84b6b1 · 2017-09-05T16:06:55.000-04:00
diff --git a/RNTester b/RNTester
@@ -1 +1 @@
-Subproject commit 5a0eab23207e5b54a334ccf79550da87a39d31ac
+Subproject commit aabb2f97ff78168acc4e999132321b67cb336c36
