add travis CI
add travis CI

asciidoctor/asciidoctor-ant,asciidoctor/asciidoctor-ant,binout/asciidoctor-ant,binout/asciidoctor-ant,rockyallen/asciidoctor-ant,rockyallen/asciidoctor-ant,asciidoctor/asciidoctor-ant,binout/asciidoctor-ant,rockyallen/asciidoctor-ant