Merge pull request #46 from anthonny/master

Resolve #44 - Add default stylesheet to dist
Fix CSS file and update to 1.5.0
Update bower.json to 1.5.0
Update package.json to 1.5.0
Change asciidoctor_default.css to asciidoctor.css
Last commit (67c5766) contain update to asciidoctor 1.5.0 in Gemfile
Update README.adoc

Add TravisCI image
Update bower.json

Ignore `dist/npm`
Update bower.json

Add asciidoctor-all in all format
update example and README for 1.5.0
Merge pull request #48 from mojavelinux/update-example-and-readme

update example and README for 1.5.0