Add support for `as-links` through the command-line
Add support for `as-links` through the command-line

gjtorikian/html-proofer,gjtorikian/html-proofer,Tiger66639/html-proofer,Tiger66639/html-proofer,gjtorikian/html-proofer,Tiger66639/html-proofer,gjtorikian/html-proofer,gjtorikian/html-proofer,Tiger66639/html-proofer,Tiger66639/html-proofer