Feature/add chain config#9

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yancyribbens wants to merge 2 commits intodgyoshi:masterfrom

yancyribbens:feature/add-chain-config

Commits on Oct 11, 2019

add a release arg to set which release is built
yancyribbens
committed

Commits on Oct 13, 2019

add env and build args for switching to a different blockchain such as regtest
yancyribbens
committed