chore: Adds license header

Author: asm0dey

examples/src/main/kotlin/org/jetbrains/kotlinx/spark/examples/Broadcasting.kt

@@ -1,3 +1,22 @@
+/*-
+ * =LICENSE=
+ * Kotlin Spark API: Examples for Spark 2.4+ (Scala 2.11)
+ * ----------
+ * Copyright (C) 2019 - 2021 JetBrains
+ * ----------
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * =LICENSEEND=
+ */
 package org.jetbrains.kotlinx.spark.examples
 
 import org.jetbrains.kotlinx.spark.api.broadcast
@@ -20,4 +39,4 @@ fun main() = withSpark {
             .collectAsList()
 
     println(result)
-}
+}