Merge pull request #3 from MarimerLLC/master

Pull latest changes from repository
Merge pull request #4 from MarimerLLC/master

Update with the latest commits in CSLA
Added CslaTaskFactory and refactored to use common ContextParams with BackgroundWorker. With UnitTests.  Closes #142
Merge pull request #143 from jonnybee/master

Added CslaTaskFactory, closes #142