Properly escape command-line error messages
Properly escape command-line error messages

Use a <pre> element to maintain white space and line breaks. Prefer CSS `padding' to `margin' (the default <pre> style) because a nonzero margin pushes the body element down and adds a scrollbar to the page.

johnpmayer/elm-reactor,evancz/cli,rehno-lindeque/elm-reactor,vilterp/elm-reactor,abbradar/elm-reactor