Grammar
Formatting of warning text
Merge pull request #18 from stoft/master

Grammar and layout - Thanks!
IO.readline deprecated, updated code example
IO.readline deprecated, updated description
Grammar, missing 'use'
Merge pull request #19 from stoft/master

IO.readline deprecated, grammar correction - Thanks!
Merge branch 'master' of github.com:oreillymedia/etudes-for-elixir
Partially finished chatper 10