VisualStudio: Add TeamCity exclusion

Exclude folders created by the TeamCity VS plugin.

Author: kristof-mattei

VisualStudio.gitignore

@@ -61,9 +61,11 @@ ipch/
 
 # ReSharper is a .NET coding add-in
 _ReSharper*/
-# Some recommend against the RS rule below - excludes useful info?
 *.[Rr]e[Ss]harper
 
+# TeamCity is a build add-in
+_TeamCity*
+
 # DotCover is a Code Coverage Tool
 *.dotCover