Pin urfave/cli version to 1.20

Author: elizabethengelman

go.mod

@@ -46,6 +46,9 @@ require (
 	golang.org/x/sync v0.0.0-20190423024810-112230192c58
 	gopkg.in/olebedev/go-duktape.v3 v3.0.0-20190709231704-1e4459ed25ff // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7
+	gopkg.in/urfave/cli.v1 v1.0.0-00010101000000-000000000000 // indirect
 )
 
 replace github.com/ethereum/go-ethereum => github.com/vulcanize/go-ethereum v0.0.0-20190731183759-8e20673bd101
+
+replace gopkg.in/urfave/cli.v1 => gopkg.in/urfave/cli.v1 v1.20.0

go.sum

@@ -241,6 +241,8 @@ github.com/tyler-smith/go-bip39 v1.0.0/go.mod h1:sJ5fKU0s6JVwZjjcUEX2zFOnvq0ASQ2
 github.com/tyler-smith/go-bip39 v1.0.2 h1:+t3w+KwLXO6154GNJY+qUtIxLTmFjfUmpguQT1OlOT8=
 github.com/tyler-smith/go-bip39 v1.0.2/go.mod h1:sJ5fKU0s6JVwZjjcUEX2zFOnvq0ASQ2K9Zr6cf67kNs=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
+github.com/vulcanize/go-ethereum v0.0.0-20190731183759-8e20673bd101 h1:fsHhBzscAwi4u7/F033SFJwTIz+46D8uDWMu2/ZdvzA=
+github.com/vulcanize/go-ethereum v0.0.0-20190731183759-8e20673bd101/go.mod h1:9i0pGnKDUFFr8yC/n8xyrNBVfhYlpwE8J3Ge6ThKvug=
 github.com/vulcanize/vulcanizedb v0.0.5/go.mod h1:utXkheCL9VjTfmuivuvRiAAyHh54GSN9XRQNEbFCA8k=
 github.com/vulcanize/go-ethereum v0.0.0-20190731183759-8e20673bd101 h1:fsHhBzscAwi4u7/F033SFJwTIz+46D8uDWMu2/ZdvzA=
 github.com/vulcanize/go-ethereum v0.0.0-20190731183759-8e20673bd101/go.mod h1:9i0pGnKDUFFr8yC/n8xyrNBVfhYlpwE8J3Ge6ThKvug=
@@ -302,6 +304,7 @@ gopkg.in/olebedev/go-duktape.v3 v3.0.0-20190709231704-1e4459ed25ff h1:uuol9OUzSv
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20190709231704-1e4459ed25ff/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=
 gopkg.in/urfave/cli.v1 v1.20.0/go.mod h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0=
 gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=