JS: rename libs/ and script.js

The dir name `vendor/` is increasingly common and this small change
might save some people a bit of time when it comes to using the project
with RequireJS et al.

See:

http://www.javascriptu.org/decks/sd/building_the_foundation/#slide-51
Additional changes to index.html for rename libs to vendor
Merge pull request #1051 from sjonnet/patch-1

Additional changes to index.html for rename libs to vendor
Update .gitignore to include Rubinius's compiled files.
Remove HTML comment about appcache

Using appcache is complicated and can have unexpected consequences if
you do not have a good grasp of the spec. The way that this project
suggested using appcache was likely to be problematic.

Ref #1060
R.I.P. Hot pink text-selection highlight

Replace hot pink with a more neutral selection background color: the
default found on OS X.

A number of high-profile sites have failed to customize the hot pink
default that HTML5 Boilerplate used to include. People should be able to
trust the project to include sensible defaults. Keeping hot pink in
there by default breaks the "no surprises" expectation of amateur and
professional developers.

Ref #610
Ref #969
Change selection-color in 404 error template, closes #1067

The selection-color was changed in 1d320b5. Add this background-color in the 404 error template and remove the text-color. Thanks to @elexx.
Adding new MIME types, a note about 404, and a PHP flag

Fixes #1062 and #1053
Merge pull request #1055 from danielgrippi/patch-1

Include Rubinius' compiled files in .gitignore
Update .gitignore to include AppleDouble (dot underscore) files
Merge pull request #1073 from lekkerduidelijk/patch-3

Update .gitignore to include AppleDouble (dot underscore) files
Adding JSONP
Merge branch 'master' of git://github.com/h5bp/html5-boilerplate

* 'master' of git://github.com/h5bp/html5-boilerplate:
  Update .gitignore to include AppleDouble (dot underscore) files
  Update .gitignore to include Rubinius's compiled files.
Merge pull request #1071 from mikealmond/master

Add some MIME-types (JSON, JSONP, audio, video and flash), a note about a custom 404-file and a PHP flag (magic_quotes_gpc)
Add missing or next condition.
Update documentation.
Updated .htaccess:
Prevent mobile network providers from modifying your site
Merge pull request #1097 from karlpcrowley/patch-1

.htaccess: Prevent mobile network providers from modifying your site (disabled by default)
Merge pull request #1095 from clarkni5/master

Add [OR] to rewrite condition

The first condition checks to see if the request matches a directory and the second condition checks to see if it matches a file. Without the [OR], the condition always fails.
Humans.txt prettification

Simplify the template a bit. Switch to hash-style comments to mirror
robots.txt standard.