js-beautify.py: enable test for --eol option
js-beautify.py: enable test for --eol option

Fixes issue #987, the root cause was incorrect command line processing,
see PR #1315.

beautify-web/js-beautify,bitwiseman/js-beautify,bitwiseman/js-beautify,beautify-web/js-beautify,bitwiseman/js-beautify,beautify-web/js-beautify,bitwiseman/js-beautify,beautify-web/js-beautify