Code minor fixes. Documentation improvement with markdown integration…

… in Javadoc, README.md as Javadoc docs overview description.

Refactoring of all classes and packages, tokenizer (Apache Lucene rem…

…oved) to be Android ready, and the single language concept towards multi-language. Some fixes. Some Java 1.7 compatible object-oriented and performance improvements. Tests 100% OK!

Added: release rule to the gradle build script, it runs tests and gen…

…erates JAR, sources, and javadoc ZIP files in build/distributions. Changed documentation accordingly.