code consistency - spaces and quotes
fix trailing blank line
clean-up trailing whitespace
prefer single-quoted strings when you don't need string interpolation or special symbols.
source files should end with a newline (\n).
remove extra blank lines at body beginning and end.
have a blank line before and after private.
use 2 (not 4) spaces for indentation.
remove redundant `return`.
remove space after [ and before ]
add space after { and before }
misaligned end
favor modifier if/unless usage when you have a single-line body.
Align the parameters of a method call if they span more than one line.
Merge remote-tracking branch 'upstream/master'
Merge pull request #98 from acmetech/master

Code consistency/style