Merge pull request #1 from n-lagomarsini/indexes

Added processes for indexes
 - structure refactoring
Merge pull request #2 from afabiani/master

 - structure refactoring
Code Refactoring
 - changeMatrix package renaming
 - javadocs update
Merge pull request #3 from afabiani/master

 - change Matrix process package renaming and Javadoc updates
added modifications
Code refactoring on jiffle processes
POM modifications