Also included is a way to pass port and swarm info to methods that build
the config file. This makes testing easier. Multiple peers can be
started on the same machine easily.
Now paying attention to the IPFS_PATH environment variable to determine
where the repository is. Fixed some broken tests. Fixed a bug whereby a
subdirectory within a subdirectory was not displaying correctly when
imported.
Blockstore now storing the data, whereas datastore is storing the key
and filename. The key should be the multihash (currently the sha256, not
the multihash), and the value is the filename (base32).
