Updated the jquery version in the Gradle snippet.

Dave Syer pointed out that I missed the build.gradle snippet when changing the jquery version. This commit fixes that. Thanks, Dave.

README.adoc

@@ -116,7 +116,7 @@ implementation 'org.webjars:webjars-locator-core'
 implementation 'org.webjars:sockjs-client:1.0.2'
 implementation 'org.webjars:stomp-websocket:2.3.3'
 implementation 'org.webjars:bootstrap:3.3.7'
-implementation 'org.webjars:jquery:3.1.0'
+implementation 'org.webjars:jquery:3.1.1-1'
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