Java8 And Slf4j compatibility

Made the code more readable, more compatible with the latest java conventions and changed the console outputs to a logging interface framework (Which means that now our released jar has maven dependencies in it which makes it somewhat heavier)

Trimmed down and workable library

Release 0.7 marks the first release of the TextToEmotion library.

It is a fully workable release with the original code trimmed and refactored