Update README.md

Adding Pharo 11 compatibility information (and tested build version).
Updating quantity of unit tests.

Author: labordep

README.md

@@ -12,7 +12,7 @@ Molecule support completely transparent class augmentation into component (not n
 
 ### Installing Molecule
 
-Pharo 8, Pharo 9 and Pharo 10 : 
+Pharo 8, Pharo 9, Pharo 10 and Pharo 11 (build 269+) : 
 
 ```smalltalk
 Metacello new
@@ -139,7 +139,7 @@ To do so, we augment this class with component behavior.
 
 ## Test coverage
 
-Molecule includes more than 200 unit tests, we have also written tests that simulate the work of a developer when creating and modifying components. Test coverage is detailed in the release notes.
+Molecule includes more than 250 unit tests, we have also written tests that simulate the work of a developer when creating and modifying components. Test coverage is detailed in the release notes.
 
 ## Credits