restructuring - moved files from matlab fileexchange into external/fileexchange, updated README and ft_defaults. See http://bugzilla.fcdonders.nl/show_bug.cgi?id=1989
Merge branch 'master' of github.com:oostenveld/fieldtrip

git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@7685 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0
Merge branch 'master' of github.com:fieldtrip/fieldtrip