Fixed typo in package name (#235)

Author: Macarse

example/src/main/kotlin/com/expedia/graphql/sample/Application.kt

@@ -13,7 +13,7 @@ import com.expedia.graphql.sample.exceptions.CustomDataFetcherExceptionHandler
 import com.expedia.graphql.sample.extension.CustomSchemaGeneratorHooks
 import com.expedia.graphql.sample.mutation.Mutation
 import com.expedia.graphql.sample.query.Query
-import com.expedia.graphql.sample.subscribtions.Subscription
+import com.expedia.graphql.sample.subscriptions.Subscription
 import com.expedia.graphql.toSchema
 import graphql.GraphQL
 import graphql.execution.AsyncExecutionStrategy

example/src/main/kotlin/com/expedia/graphql/sample/RoutesConfiguration.kt

@@ -5,7 +5,6 @@ import com.fasterxml.jackson.databind.type.MapType
 import com.fasterxml.jackson.databind.type.TypeFactory
 import graphql.schema.GraphQLSchema
 import graphql.schema.idl.SchemaPrinter
-import org.slf4j.LoggerFactory
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
@@ -28,7 +27,6 @@ class RoutesConfiguration(
     @Value("classpath:/graphql-playground.html") private val playgroundHtml: Resource
 ) {
 
-    private val logger = LoggerFactory.getLogger(RoutesConfiguration::class.java)
     private val mapTypeReference: MapType = TypeFactory.defaultInstance().constructMapType(HashMap::class.java, String::class.java, Any::class.java)
 
     @Bean

example/src/main/kotlin/com/expedia/graphql/sample/subscribtions/Subscription.kt

@@ -1,4 +1,4 @@
-package com.expedia.graphql.sample.subscribtions
+package com.expedia.graphql.sample.subscriptions
 
 import com.expedia.graphql.annotations.GraphQLDescription
 import org.springframework.stereotype.Component

example/src/main/kotlin/com/expedia/graphql/sample/subscribtions/SimpleSubscription.kt renamed to example/src/main/kotlin/com/expedia/graphql/sample/subscriptions/SimpleSubscription.kt

@@ -0,0 +1,3 @@
+package com.expedia.graphql.sample.subscriptions
+
+interface Subscription