Lunny Xiao 83b90e4199 Use vfsgen instead of go-bindata ()
* use vfsgen instead of go-bindata

* fix templates

* fix fmt

* vendor vsfgen
..
file.go Use vfsgen instead of go-bindata ()
vfsutil.go Use vfsgen instead of go-bindata ()
walk.go Use vfsgen instead of go-bindata ()