Add notice that go1.5+ is required to install gomobile.
diff --git a/Mobile.md b/Mobile.md
index 6dccc5b..f0ad95c 100644
--- a/Mobile.md
+++ b/Mobile.md
@@ -10,8 +10,10 @@
## Tools
-Go Mobile introduces a new tool, [gomobile](https://golang.org/x/mobile/cmd/gomobile),
-to help you with the build and the binding process.
+Note: You need to have [Go 1.5 or above](https://golang.org/dl/) to install mobile tools.
+
+Go Mobile introduces a new tool, [gomobile](https://golang.org/x/mobile/cmd/gomobile),
+to help you with the build and the binding process.
Go get gomobile and initialize it to install the required toolchain.
On Mac OSX, you will need to have
