Tool for converting hashes

[kyledrake]

Create a tool / subcommand within go-ipfs for converting between cidv0 and cidv1, and different bases (base58, base32, etc).

https://github.com/ipfs/ipfs/issues/337

@kevina

[Stebalien]

Take a look at the cid-fmt command in the go-cid package. The command you're looking for is cid-fmt -b b -v 1 '%s'. It could definitely be better documented and more user friendly...

[kevina]

I am thinking this should be a sub-command of go-ipfs. See #5357.

[alanshaw]

JS CID tool coming together here: https://github.com/ipfs-shipyard/js-cid-tool - it can be integrated with ipfs as ipfs cid but can also be used as a standalone CLI tool.