Bump ugorji/go to latest version

[msabramo]

to solve compilation errors in etcd/client vendored package

Fixes these errors:

abramowi@fdd-dsh:/Users/abramowi/go/src/github.com/behance/go-common$ go install -v ./...
github.com/behance/go-common/vendor/github.com/coreos/etcd/client
# github.com/behance/go-common/vendor/github.com/coreos/etcd/client
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:70:6: r.WriteArrayStart undefined (type codec.encDriver has no field or method WriteArrayStart)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:72:6: r.WriteMapStart undefined (type codec.encDriver has no field or method WriteMapStart)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:75:6: r.WriteArrayElem undefined (type codec.encDriver has no field or method WriteArrayElem)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:83:6: r.WriteMapElemKey undefined (type codec.encDriver has no field or method WriteMapElemKey)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:85:6: r.WriteMapElemValue undefined (type codec.encDriver has no field or method WriteMapElemValue)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:94:6: r.WriteArrayElem undefined (type codec.encDriver has no field or method WriteArrayElem)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:102:6: r.WriteMapElemKey undefined (type codec.encDriver has no field or method WriteMapElemKey)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:104:6: r.WriteMapElemValue undefined (type codec.encDriver has no field or method WriteMapElemValue)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:113:6: r.WriteArrayElem undefined (type codec.encDriver has no field or method WriteArrayElem)
/home/abramowi/go/src/github.com/behance/go-common/vendor/github.com/coreos/etcd/client/keys.generated.go:121:6: r.WriteMapElemKey undefined (type codec.encDriver has no field or method WriteMapElemKey)

Cc: @mayanand, @kmillett

[mayanand]

👍