How to do svn ignore on a single file?

  While I am using sublime ... it creates two files that i don't want to include in my subversion repository 

?       xxx.sublime-project

?       xxx.sublime-workspace

  Removing them is as following:   

1. Go to the directory of the un-needed file and type : > svn propedit svn:ignore .
2. An editor will open and you need to add a line with the file name. Save and exit the editor.
3. Commit the changes.

source:

http://stackoverflow.com/questions/2733430/how-to-do-svn-ignore-on-a-single-file