first draft of rendering perf article
first draft for review
Tweaked static file references, and fixed smooth-simple reference
crlf
add gitconfig to resolve whitespace issues.
Merge branch 'master' of github.com:html5rocks/www.html5rocks.com

* 'master' of github.com:html5rocks/www.html5rocks.com: (97 commits)
  mobile css adjustments
  Fixes 404 issue # 211
  Removing unused code (issue 217)
  Fixed typo.
  Tweaks to Joe's article
  Use helper functions for properties and events
  improve translation
  Revisions to the constraint validation post based on feedback from @aFarkas, comments, and Twitter.
  Add Google Analytics example
  Updated with practical examples
  Add PageVisibilityAPI tutorial
  Added TJ Vantoll's 75 pixel headshot.
  Fixed incorrect month in constraint validation publication date.
  Updated publish date for the constraint validation tutorial.
  Updated publish date for responsive SVG article.
  Switching to an easier support check per https://github.com/tjvantoll/www.html5rocks.com/commit/4216d165f31bb6fa2214d138ae2c8e3482b1570f#commitcomment-1985534.
  updating title
  re-tweaked.
  reverting boldness change because antialiasing chrome change was reverted
  Fixing image size
  ...
whitespace fixes.
Merge pull request #1 from cwilso/master

Fixed static references and smooth-simple ref.
moved the warnin about android above the code snippet
Merge pull request #218 from wiltzius/master

Add rendering tutorial
Fixes to rendering tutorial

	modified:   ../content/tutorials/speed/rendering/en/index.html

	modified:   ../content/tutorials/speed/rendering/en/index.html
Added figure captions; mixins to CSS
Typo fixes
Minor tweaks to CSS
Adding Web Audio article and also other supporting files.
fixed enums in track article
updated implementation details
more tweaks
Updated tutorials.yaml and updated TextTrackCue(...)
added fixed audio sprites example