use
svn import **folder** -m "comment here"
to import a folder into your repository (to run).
you can also use
svn add **folder**
to add files and folders to the repository, use
svn commit -m "comoment here"
But the easiest way would be to use a GUI application such as tortoiseSVN for windows and svnX for OS X if you are not familiar with SVN.