Ignore classes generated by the android-state library (#102)

Author: vRallev

src/main/groovy/com/vanniktech/android/junit/jacoco/GenerationPlugin.groovy

@@ -280,6 +280,7 @@ class GenerationPlugin implements Plugin<Project> {
          '**/*$JsonObjectMapper.*', // LoganSquare auto-generated code.
          '**/*$inlined$*.*', // Kotlin specific, Jacoco can not handle several "$" in class name.
          '**/*$Icepick.*', // Icepick auto-generated code.
+         '**/*$StateSaver.*', // android-state auto-generated code.
          '**/*AutoValue_*.*' // AutoValue auto-generated code.
         ] : extension.excludes
     }

src/test/groovy/com/vanniktech/android/junit/jacoco/GenerationTest.groovy

@@ -305,7 +305,7 @@ public class GenerationTest {
     public void getExcludesDefault() {
         final def excludes = GenerationPlugin.getExcludes(new JunitJacocoExtension())
 
-        assert excludes.size == 19
+        assert excludes.size == 20
         assert excludes.contains('**/R.class')
         assert excludes.contains('**/R2.class')
         assert excludes.contains('**/R$*.class')
@@ -324,6 +324,7 @@ public class GenerationTest {
         assert excludes.contains('**/*$JsonObjectMapper.*')
         assert excludes.contains('**/*$inlined$*.*')
         assert excludes.contains('**/*$Icepick.*')
+        assert excludes.contains('**/*$StateSaver.*')
         assert excludes.contains('**/*AutoValue_*.*')
     }