Use Kotlin style in readme

Author: dinomite

README.md

@@ -149,13 +149,13 @@ A `com.fasterxml.jackson.annotation.@JsonTypeInfo` annotation at the base-class
 ```kotlin
   @JsonTypeInfo(use = JsonTypeInfo.Id.NAME)
   sealed class SuperClass{
-      class A:SuperClass()
-      class B:SuperClass()
+      class A: SuperClass()
+      class B: SuperClass()
   }
 
 ...
 val mapper = jacksonObjectMapper()
-val root:SuperClass = mapper.readValue(json)
+val root: SuperClass = mapper.readValue(json)
 when(root){
     is A -> "It's A"
     is B -> "It's B"

src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/SealedClassTest.kt

@@ -2,34 +2,30 @@ package com.fasterxml.jackson.module.kotlin.test
 
 import com.fasterxml.jackson.annotation.JsonTypeInfo
 import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
-import com.fasterxml.jackson.module.kotlin.test.SealedClassTest.SuperClass.A
 import com.fasterxml.jackson.module.kotlin.test.SealedClassTest.SuperClass.B
 import org.junit.Test
 import kotlin.test.assertTrue
 
 class SealedClassTest {
-
-
     private val mapper = jacksonObjectMapper()
 
     /**
      * Json of a Serialized B-Object.
      */
-    private val jsonB = "{\"@type\":\"SealedClassTest\$SuperClass\$B\"}"
+    private val jsonB = """{"@type":"SealedClassTest${"$"}SuperClass${"$"}B"}"""
 
     /**
      * Tests that the @JsonSubTypes-Annotation is not necessary when working with Sealed-Classes.
-     *
      */
-    @Test fun SealedClassWithoutSubTypes(){
-        val result =  mapper.readValue(jsonB, SuperClass::class.java)
+    @Test
+    fun sealedClassWithoutSubTypes() {
+        val result = mapper.readValue(jsonB, SuperClass::class.java)
         assertTrue { result is B }
     }
 
     @JsonTypeInfo(use = JsonTypeInfo.Id.NAME)
-    sealed class SuperClass{
-        class A:SuperClass()
-        class B:SuperClass()
+    sealed class SuperClass {
+        class A : SuperClass()
+        class B : SuperClass()
     }
-
-}
+}