switching to RC, really to test the appveyor.yml will buuild but not deploy

Author: ButchersBoy

appveyor.yml

@@ -56,4 +56,4 @@
   - path: '**\MaterialDesignThemes.*.nupkg'
   - path: bin\**\*.*
 
-  version: 0.1.0.{build}
+  version: 0.1.0.rc{build}