update Zepto to v1.1.4
replace custom window reuse stuff with reuseOutput

As of alpha 9529 TextMate supports reusing the
HTML output window, which we were previously doing
manually with a complicated file marker system.
update some error explanation URLs
update Bootstrap to v3.2.0
update copyright notice
remove old unused module references
update copyright notice
add a way to check for a new version of the bundle
delete old build script
remove old screenshots
update version to 1.1.0
better links for download and release notes
update screenshots