Merge pull request #87 from sclassen/master

Warnings about usage of "backend"
Change attribute name and type of template_dir to template_dirs of type List<String>
Merge pull request #89 from mrhaki/documentation

Changed attribute name and type template_dir
Update readme [skip ci]
Embed OpenHub flair in readme [skip ci]
Removing OpenHub flair, apparently github doesn't like it [skip ci]
update terminology and wording

- use the terminology "Converting" instead of "Rendering"
- update wording in log messages to be more explicit
Add epub3 as a built-in backend name
Merge pull request #88 from sclassen/master

fix issue #79
Merge pull request #91 from mojavelinux/terminology-wording

update terminology and wording
Merge pull request #93 from mojavelinux/epub3-backend

Add epub3 as a built-in backend name
Bump version
Update to Asciidoctor 1.5.0
Add a description to the asciidoctor task. Fix #100
Merge pull request #97 from mojavelinux/master

Update to Asciidoctor 1.5.0
Finish up migrating to asciidoctorj 1.5.0
resolves #98 add configuration for gemPath and requires
Merge pull request #99 from mojavelinux/issue-98

resolves #98 add configuration for gemPath and requires
Refine error message when sourcedocumentNames contains absolutePaths
Merge branch 'master' of github.com:asciidoctor/asciidoctor-gradle-plugin