Learning Redis (and Node) by doing exercises from the Seven Databases in Seven weeks book.

run by ```$node transaction.js``

First start the reader by $node reader.js. Then the writer by $node writer.js

Reader will then output what the writer wrote to that list.

Returns the number of requests made to this server.

Run by $node simple-web-server.js

Publisher and subscriber client in the same file.

Subscribes to channel "feed1", recieves two messages then ends.

Run by $node pub-sub.js