New Release: v0.8.6

There hasn't been a Roundhouse release in a while and we'd like to get one out there. We can leave this pull request open while we cross our 't's and dot our 'i's. Here is a simple to-do list of things that need to be done (please add anything missing!):

+ [x] Review all changes between latest on GitHub and SVN revision 368.
+ [x] Update release notes: README, wiki.
+ [ ] Update samples?
+ [ ] End to end regression tests.
+ [x] Update documentation in command line help and on wiki:
  + [x] runBeforeUp parameter 
  + [x] verify debug parameter documented
  + [x] text file versioning parameter
  + [x] Add option to turn off copying scripts into 'itemsRan' directory
  + [x] WarnOnOneTimeScriptChange
  + [x] Update how /simple works.  
+ [ ] Push to NuGet, Chocolatey and RubyGems..