Document close like other functions.
add in a quit command
Improve stats command (be careful with closures inside loops!).

* Cleaner to understand closure.
* Functions correctly with multiple servers.
* Error callback correctly invoked.
Improve flush implementation.
Fix spelling mistake in source notes.
add self to authors
add items to changelog
bump package version to 0.8.5
Add more items to todo list.
Add build directory to gitignore.
Merge pull request #49 from dterei/master

Bunch of fixes to memjs