fix Javadoc errors
upgrade to JUnit 4.12
Merge pull request #227 from mojavelinux/junit-4_12

upgrade to JUnit 4.12
minor cleanup to build.gradle and settings.gradle
upgrade bintray plugin to 1.0
fix spelling of slf4jVersion & xmlMatchersVersion properties
align version of JRuby used by the JRuby Gradle plugin
optimize thread & memory settings for tests; stub test logging config
minor cleanups to build.gradle
enable bintray plugin configuration via environment variables; cleanups
fix bintray plugin

- disable bintrayUpload task in root project
- fix resolution of signature file for distribution zip
remove comments about JRuby jar plugin
Merge pull request #226 from mojavelinux/doclint

fix Javadoc errors
resolves issue #220 by adding getOptions method on Document class.
recommend import wizard in IntelliJ IDEA instead of Gradle plugin
revise metadata for bintray package
add clean task to bintrayUpload command in README
cleanups for distribution zip

- use archives configuration instead of custom dist configuration
- detect distribution subproject more generically
- don't hardcode application name
add tip about forcing release behavior to Gradle build
remove unused lines in Gradle builds