How to use svnignore!
1. Settings svn:ignore property
svn propset svn:ignore “*” folder1/
svn propset svn:ignore “*” folder2
2. Commit to apply changes.
svn ci -m “Data in these folders will be ignored by svn”
Source: http://www.devcha.com/2008/02/how-to-make-svn-ignore-some-folders.html