Project Reconstruction

- Add gitignore and README file
- Add Maven structure
  - add fingbugs plugin
  - remove jMetalHome class and fix test cases

TODO
- several test cases are not passing (due to those strings "/home/juanjo/Dropbox/", "/Users/antelverde/", "/home/jorgero/")
- there are a lot of warning due to Serialization class (this should be easy to fix)