Bump version number.

Change-Id: I6b776bf4230ef13f7736a5761f820d0109580929
diff --git a/build.gradle b/build.gradle
index bbfa273..25c183e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'android-library'
 
 group = 'com.android.support.test.uiautomator'
-version = '2.1.0'
+version = '2.1.1'
 
 // Android Library configuration
 android {