fixing the nuget tags
Add 0.8.6 release notes.
Updated parameter documentation for /versionfile.
Updated WarnOnOneTimeScriptChange command line help.
Merge remote-tracking branch 'mpareja/v0.8.6'
Merge remote-tracking branch 'upstream/master' into upstream-merge

Conflicts:
	product/roundhouse.console/Program.cs
Merge conflict...

I'm clueless as to what changed. DiffMerge reports the files as
identical. git mergetool also says there are no files that need merging.
So I'm at a loss.

modified:   README.markdown
Merge branch 'master' into dev

Conflicts:
	README.markdown