Composer support & new feature

I made a little complex commit here. 
I've provided:
* Composer Vendor mechanism 
* PHPUnit - bootstrap file is composer generated
* unit tests were fixed
* travis-ci is updated and working with composer. (testing under php 5.3 - 5.5 ) https://travis-ci.org/emgiezet/FunstaffTikaBundle
* And i've set the default output encoding to UTF-8 (new parameter in the configuration)
* I've updated the documentation.
* added new version of tika-app ver. 1.3 into Resources/java

Thank you so much for that bundle it rox :)