Updates content from Interactive Fiction (IF), to Multi-User Dungeon
(MUD) as it represents better what JAdventure is, and where the team is
aming at.
Few details updated
Merge pull request #145 from verhagen/master

Updates Introduction
edited spelling/grammar
Adds maven-javadoc-plugin
Corrects indentation
Merge pull request #146 from verhagen/improve-code-generics

Improve code generics and removes resource leaks
Merge pull request #149 from verhagen/master

Adds maven-javadoc-plugin
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)