doc: maximum number of keys to return for `GET /` is `max-keys`
correct status when deleting objects
Allow copy part from object.
committed too soon, fixes previous
doc: provide a pithos.yaml which works with embedded Cassandra

Paths to the DB directories are relative to the current directory.
doc: provide a `s3cmd.cfg`

It matches the key/secret in pithos.yaml. Also update `README.md` to
make use of this file.
add parser for multiple object delete syntax
KNF
enable multiple object delete
correct subresource
kill dead code
wrong call signature, thanks lein-eastwood!
Add WAL-E usage instructions
Merge pull request #35 from exoscale/feature/wal-e

Add WAL-E usage instructions
simplify stream-copy-part-block
remove dead get-chunk-q arity
explain rationale for cleanup-block-q
stop lying
correct rationale for chunk retrieval
assoc a request id on errors as well