Renamed files in js-folder (Lowercase L)

Renamed the files in the js-folder. They now use a lowercase L in the word
slider.

If this is not desired, revert this commit and edit the demo.html and index.html
pages, because they point to Slider instead of SLider.
Double click on bullet fix

Moved statements, so the bullet won't get reset on double click.
Double clicking on a bullet now also pops out the mini.
Double click fix on mini's

Same as with the bullets. Double clicking a mini wouldn't make it pop out a
little. Also the bullets wouldn't switch to the right colour.
Link to demo page in README

Sorry this is not part of the double click issue, but I've made a small edit in
the README file to provide a link to a demo page. The demo page is maintained in
the branch gh-pages. This could take up to 10 minutes to show up on
initialization.
Merge pull request #1 from BKer/double-click-fixes

Double click fixes