Merge pull request #20 from Randy-Ma/master

Fix issues when running by category
Merge pull request #21 from Randy-Ma/Revit2015

merge the master branch into the Revit2015 branch
Merge branch 'master' of https://github.com/DynamoDS/RevitTestFramework into Revit2015
New installer.
Merge branch 'Revit2015' of https://github.com/DynamoDS/RevitTestFramework into Revit2015
New installer.
Merge branch 'master' into Revit2015

Conflicts:
	tools/Output/RevitTestFrameworkInstaller2015.exe
Use test assembly name as the results root.
Merge branch 'master' into Revit2015
Cleanup
Cleanup
Add the ShouldRun parameter.
Refactor tests and add test for exclude.
Comment one debug statement.
SetupTests does not require a parameter.
Add selected test summary.
Switching grouping type refreshes.
Don't hold reference to sorting group.
Add 2 tests.
Cleanup