Update README.md

Author: dbertolino-github

README.md

@@ -14,3 +14,5 @@ A tool to analyse Java code quality able to calculate the following metrics:
 • Depth of Inheritance tree (DIT)
 • Number of Children (NOC)
 
+The software is built on top of ANTLR4 compiler generated with an open-source Java8 grammar.
+It provides a JavaFX GUI and the possibility to print the results in three different .csv files, each one represents a depth level of the analysis: Overview, Classes and single methods.