Add RuboCop
Align `end` of block
Align `else`, `end` with `if`
Avoid shadowing outer local variable
Remove redundant use of to_s in interpolation
Remove unused block arguments
Remove useless assignments to variable
Use `alias_method` instead of `alias`
Align the elements of arrays
Align the parameters of method calls
Avoid using {...} for multi-line blocks
Prefer `find` over `detect`
Prefer `reduce` over `inject`
Avoid using :: for method calls
Hash#has_key? is deprecated in favor of Hash#key?
Remove extra blank lines
Remove extra empty lines around body
Favor `format` over `String#%`
Use the new Ruby 1.9 hash syntax
Indent arrays