Code style changes and code clean up.
Call #deregisterServiceProvider() outside of the iteration over the existing service providers
Merge pull request #30 from ankon/issue29-cme-servlet-contextDestroyed

Call #deregisterServiceProvider() outside of the iteration over the existing service providers
TMS-29: Test case exposing .ConcurrentModificationException.
Merge branch 'master' of github.com:haraldk/TwelveMonkeys
TMS-29: Test case exposing .ConcurrentModificationException.
TMS-29: Code clean up after merge.
Update README.md