Add link to the Future of GWT 2015 Study

Change-Id: I83bd2acae783523f380d305c0671243d9e8abaa5
diff --git a/src/main/markdown/index.md b/src/main/markdown/index.md
index 5843fac..926f537 100644
--- a/src/main/markdown/index.md
+++ b/src/main/markdown/index.md
@@ -1,3 +1,4 @@
+<a href="http://bit.ly/GWT2015" style="background: #f55837; padding: 0.5em; color: #fff; float: right; border-radius: 2px; border: 1px solid #e54827">Answer the Future of GWT 2015 Study</a>
 
 GWT
 ===