Add builds a merkledag node from a reader, adds it to the blockstore, and returns the key representing that node.

AddR recursively adds files in |path|.

AddWithContext does the same as Add, but with a custom context.

AddWrapped adds data from a reader, and wraps it with a directory object to preserve the filename.

NewAdder Returns a new Adder used for a file add operation.

Adder holds the switches passed to the `add` command.