This is just a simple procedure how to tell subversion to ignore files or directories.
cd parent_directory
# Check the current setup
svn proplist -v .
# set the editor to edit the properties
export EDITOR=vi
# open up editor with the properties
svn propedit svn:ignore .
Text editor opens (vi in my case) Here you have to specify files and directories to be ignored. E.g.
docs
*.log
and last, but not least, commit.
svn commit