message: add justifyItems to FLEX_CONTAINER props, sort
diff: @@ -46,13 +46,14 @@ export const POSITION = [
  export const FLEX_CONTAINER = LAYOUT.concat(
  // flex container props (display: flex)
  - 'alignContent',
  - 'alignItems',
  - 'flexWrap',
  'flex',
  'flexBasis',
  'flexDirection',
  + 'flexWrap',
  + 'alignContent',
  + 'alignItems',
  'justifyContent',
  + 'justifyItems',
  'order'
  )
  