Awesome
gopherpen 
Gopherpen is a project template that will let you easily get started with GopherJS for building a web app. It includes some simple HTML, CSS, and Go code for the frontend. Make some changes, and refresh in browser to see results. When there are errors in your frontend Go code, they will show up in the browser console.
Once you're done making changes, you can easily create a fully self-contained static production binary.
Installation
Get the source code for gopherpen and all dependencies, both for production and development modes:
go get -u -d github.com/gopherjs/gopherpen/...
go get -u -d -tags=dev github.com/gopherjs/gopherpen/...
go get -u -d -tags=generate github.com/gopherjs/gopherpen/...
Building
Development Build
Accesses assets from disk directly:
go build -tags=dev
Production Build
All assets are statically embedded in the binary, so it can run standalone in any folder:
go generate
go build