shadow-dom: Drop section numbers from directory names.

This change is based on the discussion at
<https://github.com/w3c/web-platform-tests/pull/130>.

There is no change in test contents.
Merge pull request #134 from yutak/shadow-dom/drop-section-numbers

shadow-dom: Drop section numbers from directory names.
updated README.md to make it somewhat closer to what the repo really is nowadays
integrating fixes from review
a couple more fixes
Merge pull request #137 from dontcallmedom/master

Updated README to match more closely reality
Add a reftest for a shadow root.
add Close-NaN test for WebSocket
Merge pull request #138 from hayatoito/work

Add a reftest for a shadow root.
Close-string test for WebSocket
Close-reason test for WebSocket and Clearify it
shadow-dom: Added tests that checks inheritance of contentEditable

Added tests of inheritance of contentEditable of shadow host.
This tests is related to the 'Editing' sections of User Interaction of
the specs.
http://www.w3.org/TR/2013/WD-shadow-dom-20130514/#editing
Removed unused variable.
add tests for a content element
extentions interface tests
initial test suite for media capture and streams (getUserMedia); migrated from https://dvcs.w3.org/hg/media-capture/file/default/submitted/W3C
Merge pull request #141 from oannao/work

Add tests for a content element
Merge branch 'master' of github.com:w3c/web-platform-tests
protocol interface tests
Fixed the file shadow-root-001-ref.html