Log Message:
Update ruby-coderay to 1.0.8.

* add :string/:char, remove :regexp/:function color from Terminal encoder [GH
  #29, thanks to Kyrylo Silin]
* allow - in line number anchor prefix for HTML encoder [GH #32, thanks to
  shurizzle]
* Fix HTML scanner: Don¡Çt crash if HTML in a diff contains a JavaScript tag.