Renamed @conn to @client in index.coffee.
Renamed redisConn to redisClient in testSpec.coffee and demo/src .coffee files.
Added memwatch dev dependency, used in demo/src/worker01.coffee
to test for memory leaks.
Added 'mem' command line option to demo/src/worker01.coffee to
conditionally enable memory usage monitoring with memwatch.
Added demo/lib/MEMUSAGE.md to show example memory usage.
Moved testSpec.js from spec to lib directory.
Merge branch 'master' of https://github.com/cwjohan/node-redis-queue
Added a description of how to monitor memory usage in worker01.js.