Update README.md

Author: BeppiMenozzi

README.md

@@ -31,7 +31,7 @@ In your Application's or Module's build.gradle file:
 
     dependencies {
         ...
-        compile 'com.github.BeppiMenozzi:TriStateToggleButton:1.1.1'
+        compile 'com.github.BeppiMenozzi:TriStateToggleButton:1.1.2'
         ...
     }