Set default value of verbose flag
allow Awestruct front matter to override AsciiDoc header
Merge pull request #238 from mojavelinux/asciidoc-title-override

allow Awestruct front matter to override AsciiDoc header
Merge pull request #237 from aslakknutsen/verbose

Set default value of verbose flag
ruby 2.0 compat

- update json
- fix version check
- update tilt
Merge pull request #239 from mojavelinux/ruby2-compat

ruby 2.0 compat