added screencast docs. still need to add images
Merge github.com:GoogleChrome/devtools-docs

* github.com:GoogleChrome/devtools-docs:
  Correcting TOC entrt for native usb debugging
  Adds first updates for native usb debugging
remove empty tag
updates made to the screencast docs. added screenshots
merge conflicts
updated the doc, better screenshots, and should be complete
final edits to screencast
merged conflicts
added Opt+Delete to Sources shortcuts
merge conflicts
Merge github.com:GoogleChrome/devtools-docs

* github.com:GoogleChrome/devtools-docs:
  update remote-debug image.
  big remote debug rework.
  DOM and Styles - use SVG for the Icons instead of Icon Fonts
  fix in-page hash links for console API. thx @davidcalhoun
issues #19 and #5 cuz we love shortcuts
re-adding something i didnt mean to delete
Merge github.com:GoogleChrome/devtools-docs

* github.com:GoogleChrome/devtools-docs:
  fixing the inline video.
  no more console.profiles
  adb binary if you need it.
  adding youtube embeds.
  windows callout done in a p.note
  7 tap video for remote debugging docs.
  squeeze the images.
  redirect, toc, and homepage updates for DOM&Styles.
  dom and styles. published live. here's the latest.
  Squashed commit of the following:
  remote debug. fix TOC and add troubleshooting section.
  Adding mirror note to readme.
new icons for shortcuts doc. deleted old ones
moved rendering settings images into its own folder
merged flame chart doc into cpu-profiling doc
updated some of the content in cpu profiling
deleted all unused settings images
deleted unused folder

still need to edit some of the new screenshots so they are annotated
Merge github.com:GoogleChrome/devtools-docs

* github.com:GoogleChrome/devtools-docs:
  new markdown lib. handles images correctly.
annotated the cpu profile and flamechart outliers screenshots
the cpu profiling doc is now updated at least as far as images go. need to update the cpu prof content though a bit
annotated the settings page screenshots + added screenshot for js source maps
Merge github.com:GoogleChrome/devtools-docs

* github.com:GoogleChrome/devtools-docs:
  Timeline tutorial updated with new screenshots.
  remove legacy 2010 timeline UI images.