Merge pull request BytomDAO#346 from Bytom/dev

Dev

Merge pull request BytomDAO#238 from Bytom/dev

fix infinite call after list call fail (BytomDAO#237)

change MaxTxSize and MaxBlockSzie to 1048576 bytes (BytomDAO#156)

Merge pull request BytomDAO#89 from Bytom/dev

Dev

Merge pull request BytomDAO#75 from Bytom/dev

Dev

Merge pull request BytomDAO#67 from Bytom/dev

Dev

Merge pull request BytomDAO#49 from Bytom/dev

Merge dev branch

Update README.md