add get-dependency.php content mirror distribution

including check scripts
Create README.md

Test the GitHub web deployment service hook.
Merge pull request #18 from pchote/new-site-design

Website redesign
Update download.html to use local package downloads.
Update github banner based on feedback.
Simplify the legal page wording a bit.
Remove redundancy from download.html
Tabs -> spaces for downloads html content.
Merge pull request #19 from Mailaender/content-mirror

Added the current get-dependency mirror system
Merge pull request #21 from pchote/tweaks

Website tweaks.
Fix compilation regression from #21.
Remove border surrounding download platform images.
Use the svg images directly on browsers that support them.
Work around broken stroke width on safari in iOS 7.
Overhaul games page.
Add svg logo created by @xanax.
Recreate logo background with a linear gradient.

Embedded images don't render with Safari.
Merge pull request #24 from pchote/more-fixes

More fixes
Tabs -> spaces in download.html
Update playtest tag.