* Implement psclient interface
* Add string method to pieceID type
* try to fix linter errors
* Whoops missed an error
* More linter errors
* Typo
* Lol double typo
* Get everything working, begin adding tests for psclient rpc
* goimports
* Forgot to change the piecestore cli when changed the piecestore code
* Fix CLI
* remove ID length, added validator to pieceID
* Move grpc ranger to client
Change client PUT api to take a reader rather than return a writer
* GRPCRanger -> PieceRanger; Make PieceRanger a RangeCloser
* Forgot to remove offset
* Added message upon successful store
* Do that thing dennis and kaloyan wanted
* goimports
* Make closeConn a part of the interface for psclient
* Use interface
* Removed uneccessary new lines
* goimport
* Whoops
* Actually we don't want to use the interface in Piece Ranger
* Renamed piecestore in examples to piecestore-client; moved piecestore-cli to examples
* Make comments look nicer
