tree diagrams for self check question
Merge pull request #92 from isaacdontjelindell/master

Add some steps to README; fix issue #79
merge
Merge branch 'master' of github.com:bnmnetp/runestone

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Merge pull request #94 from isaacdontjelindell/master

Add Disqus comment box directive
Add self check question for binary tree insertion.
incorporate skulpt regression bug fixes.
Merge branch 'master' of github.com:isaacdontjelindell/runestone into idl-master
fix broken overview link
Merge pull request #98 from isaacdontjelindell/master

Show comment count in Disqus "Show Comments" link
Merge branch 'master' of github.com:bnmnetp/runestone