First step to sanity testing
Bump Jekyll to 2.3, so that it can 'serve' in sanity.rb
Merge branch 'master' into issue-992-release-testing

* master: (21 commits)
  .pub should not be checked into a repo.
  Fix title's capitalization
  Fix title of error message page in reference page's list o' links
  Fixed typos in example code
  Add Dev Channel information
  Fixing broken links
  Change generated file to be valid markdown
  Add error and warnings to the polymer site
  s/http/https/
  off-by-one!
  Tweak text
  Fixes #748
  Update websocket_sample.dart
  Update websocket_sample.dart.precompiled.js
  Update websocket_sample.dart.js
  Removing the "Coming in 1.6 string and adding a macro for future use.
  Adding a note stating that the Eclipse plugin should not be used on Windows.
  fix broken links in "/sample"
  Brought Quire's description up to date.
  Remove whitespace after metadata hyphens
  ...

Conflicts:
	Gemfile
	Gemfile.lock
re-futz Gemfile
README notes for testing
Merge pull request #993 from srawlins/issue-992-release-testing

First step to sanity testing