Add support for html5 caption
a11y improvements on primary navigation menu toggle
Removed addEvent support

As noted in #456, IE8 is no longer supported.

Also, undefined is falsey in JavaScript, so the typeof check was unnecessary.
Added contributing guidelines

https://github.com/blog/1184-contributing-guidelines
_s: First version of contributing guidelines.

This might change in the future, based on our experiences, but should
be a good first draft of helpful and friendly guidelines for
contributing.

Props @bungeshea.
Fixes #381.
Merge pull request #461 from jefferyto/patch-2

Removed addEvent support.

See #456.
Remove style redundancy for menu toggle; cursor pointer is already defined for buttons.
Add tab to indent 404.php(L43 to L45).
_s: Add context for translations and styles.

The referenced items are decisions we made for `_s`, that a re likely to be brought up again in pull requests or issues. Since our stance on them is not likely to change any time soon, let's include them in the Contributing FAQs.

See #464.
Merge pull request #463 from gatespace/formating-source-code

Indent multiline PHP code.
Merge pull request #443 from joshmcrty/master

Add support for HTML5 captions.
_s: Simplify caption styles to work in HTML5 mode.

Since HTML5 captions removed the additional 10px that HTML4 versions
come with, the `max-width: 98%;` rule made images blurry. This slightly
simplifies caption styles while still providing support for both HTML4
and HTML5 versions.

See #443.
Merge pull request #459 from philiparthurmoore/menu-a11y

a11y improvements on primary navigation menu toggle
Update _s.pot : add "Primary Menu" in header.php(L31).
Merge pull request #469 from gatespace/update_s_pot20140428

Update _s.pot : add "Primary Menu" in header.php(L31). And remove 'Menu'.
logical approach to function parameters for markup
escape the permalink
Update style.css

_s does not support IE6/7 so this is not necessary.
fix for a page title error

The same error as https://core.trac.wordpress.org/ticket/16468
Merge pull request #479 from psoluch/patch-1

Prevent 'Page %s' from being added to page title on 404 error pages.