pupuchain

following implementation from

Name		Name	Last commit message	Last commit date
Latest commit History 14 Commits
.gitignore		.gitignore
README.md		README.md
block.go		block.go
blockchain.Db		blockchain.Db
blockchain.go		blockchain.go
blockchain_iterator.go		blockchain_iterator.go
cli.go		cli.go
main.go		main.go
proofofwork.go		proofofwork.go
transaction.go		transaction.go