feat: Setup APIs to connect to Ethereum smart contracts#2

Merged

zhbh merged 2 commits intodevelop_samfrom develop_luke

May 18, 2020

+1,762-436

Commits on May 13, 2020

feat: Setup APIs to connect to Ethereum smart contracts
ltfschoen
committed

Commits on May 18, 2020

fix: Fixes polkawallet-io#30 . Return empty string not null when invalid custom type s and no remote node
ltfschoen
committed