go.mod: Update dependencies.
@@ -27,4 +27,6 @@ require (
github.com/valyala/fasthttp v1.2.0
go.uber.org/atomic v1.3.2
golang.org/x/crypto v0.0.0-20190123085648-057139ce5d2b
+ gopkg.in/urfave/cli.v1 v1.20.0 // indirect
+ gopkg.in/yaml.v2 v2.2.2 // indirect
)
