use the public version of vaadin4spring instead of the snapshot version
update to gradle-vaadin-plugin 0.9.2
update the gradle wrapper to use 2.2
update to codenarc 2.2 and use the starter rule set (with some modifications to make the example build)
updated to spring-boot 1.1.9
remove spring boot web from the vaadin-client configration

this pulls in javax validation 1.1 and this prevents building the widgetset
added vaadin addon maddon 1.17