Synch changes.
Made changes to appendix-b.asciidoc
Merge branch 'master' of https://atlas-server.oreilly.com/git/1234000001642

Conflicts:
	appendix-b.asciidoc
Attempting to fix ~r.
Get rid of ~r to eliminate problems with asciidoc.
Typo in julian dates [2012|2013]-02-05

the correct value seems to be 36 (see http://www-air.larc.nasa.gov/tools/jday.htm for confirmation)
Merge pull request #17 from battisti/master

Typo in julian dates [2012|2013]-02-05
Fix bug in output of Dates.julian for 2012/2013-02-05
Merge branch 'master' of https://github.com/oreillymedia/etudes-for-elixir
Merge branch 'master' of github.com:oreillymedia/etudes-for-elixir