Fix App Config transformations in TFS

App config transformations from SlowCheetah or the XmlTransform task would be overwritten with the vanilla app.config. This small change will take the transformed config file.
Merge pull request #107 from jessehouwing/patch-2

Fix App Config transformations in TFS
published applications 2.4.0
synergy 1.4.14 beta
mingw 4.8.1
synergy 1.4.15