Merged "StartConfiguration" changes from "master" branch
Merge branch 'Revit2015' of https://github.com/DynamoDS/Dynamo into Revit2015
Updated "RevitDynamoModel.Start" to use "Core.Context.REVIT_2015"
Merge pull request #2194 from Benglin/Revit2015

Merged "StartConfiguration" changes from "master" branch