purge OSX .DS_Store files
Add sanity check so that only PHP files are included in styleguide
Accordion open state displays wrong indicator
Improve styleguide frame rendering
Improve scrolling behavior for styleguide frame
ensure only PHP files show up in styleguide menu
Merge pull request #4 from amclin/master

Exclude non-PHP files from styleguide
Merge remote-tracking branch 'upstream/master'