cosmos-key-sign

for those cosmos-sdk based blockchain, this is an example explains:

• to generate account address, refers to main.go or keys/keys_test.go
• to sign offline transaction, refers to keys/sign_test.go

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对基于cosmos-sdk开发的区块链，生成账户以及对离线交易进行签名的示例代码

• 关于账户生成, 请参考main.go或者keys/keys_test.go
• 关于离线交易签名, 请参考keys/sign_test.go