0.5.1: Lint Tray Malfunction

Bug Fixes

• Make linting faster than 0.5.0, but slower than 0.4.0
  Norio Nomura
  #119
• Re-introduce --use-script-input-files option for lint & autocorrect
  commands. Should also fix some issues when running SwiftLint from an Xcode
  build phase.
  JP Simard
  #264