Small typo

Great scripts by the way ;)
Merge pull request #1 from gianpaj/patch-1

Small typo
added pre-splitting script.
renamed to mutil.py and added improved splitting logic.
adapted to new name "mutil.py".
Merge branch 'master' of https://github.com/rueckstiess/mtools
more comments in presplit.
removed option to disable balancer (now: always disabled).
quit presplitting if only one shard.
added wgen sample.
fixed bug in delay for minsert.py
added verbose flag and output. use apply_async instead of apply.
renamed mutil.py to mtoolbox.py. it sounds cooler. :)
compatible with pymongo 2.3 and 2.4. Fixed a few bugs. Changed output when not verbose.
removed duplicate verbose output for mongod primaries and mongos.
refactor mtoolbox into sub-folder.
extended README.md added INSTALL.md.
fixed relative links in README.md to INSTALL.md.
added a sentence in the command style section.
moved sections arround.