message: added new config option to readme table
diff: @@ -120,3 +120,4 @@ Example:
  |`svn.showUpdateMessage`|Show the update message when update is run|`true`|
  |`svn.remoteChanges.checkFrequency`|Set the interval in seconds to check changed files on remote repository and show in statusbar. 0 to disable|`300`|
  |`svn.sourceControl.hideUnversioned`|Hide unversioned files in Source Control UI|`false`|
  +|`svn.refresh.remoteChanges`|Refresh remote changes on refresh command|`false`|
  