Bug Fix & Enhancements

- Bug Fix: When listing blocks display something meaningful (blockid) instead of the address of the instance of the api.Block object
- Enhancement: Serialize/Deserialize the Vault
Enhancement: Verify the deserialized vault matches the original vault
Merge pull request #44 from BenjamenMeyer/bugfix_finds_by_valere_5

Bugfix finds by valere 5