Fix cuttlefish
Created by: davecromberge
Same issue as https://github.com/tsloughter/rebar3_cuttlefish/issues/7, upgrade rebar3 to newer version as suggested.
Created by: davecromberge
Same issue as https://github.com/tsloughter/rebar3_cuttlefish/issues/7, upgrade rebar3 to newer version as suggested.