update documentation

README.md

@@ -42,7 +42,8 @@ The plugin is made of two parts:
 | Code Smell Plugin | SonarQube         | SonarQube [Java plugin](http://docs.sonarqube.org/display/PLUG/Java+Plugin) |
 |-------------------|-------------------|-----------------------| 
 | 2.0.1             | 4.5.x up to 5.1.x | 3.5 and above         |
-| 3.0.0             | 5.2.x and above   | 3.7.1 and above       |
+| 3.0.0             | 5.2.x up to 5.5   | 3.7.1 up to 3.14      |
+| 4.0.0             | 5.6.x and above   | 4.0 and above         |
 
 _Note 2_: An internet connection on client's side is required to retrieve Google's visualisation API that is used to draw "Code Smells" widget's chart. No data is sent over the network.