Improve java doc
Improve java doc
Merge branch 'java-doc-improvements' of https://github.com/verhagen/JAdventure into java-doc-improvements
Adds dependencies:  cucumber-java;  cucumber-junit  1.2.0
Adds plug-ins:  build-helper-maven-plugin  1.9.1
Updates plug-ins:  maven-surefire-plugin  2.18  (was 2.16)
Merge pull request #153 from verhagen/java-doc-improvements

Java doc improvements
fixed missing apostrophe
Merge pull request #154 from verhagen/master

Interfaces methods should not be declared public