Created epilog package.
Created paragraphe package.
Updated description of classes.
Updated Preface.
Merge remote-tracking branch 'origin/david-dev' into david-dev

Conflicts:
	src/preface/Preface.java
Removed tree structures.
Removed tree structures. Restructured Preface.
Created frequency table and result classes.
Removed merge methods.
Added toString method.
Deleted old version of Preface.
Added constructor.
Updated result.
Merge branch 'david-dev'