 Merge branch 'typo-in-docs' into 'master'
 Merge branch 'typo-in-docs' into 'master'

Typo-in-docs

8thcolor/rubyconfau2015-sadr,8thcolor/eurucamp2014-htdsadr,8thcolor/eurucamp2014-htdsadr,8thcolor/rubyconfau2015-sadr,8thcolor/eurucamp2014-htdsadr,8thcolor/rubyconfau2015-sadr