Update README.md

Author: sparkcodegeeks1

README.md

@@ -7,6 +7,17 @@ Explanation of all Spark SQL, RDD, DataFrame and Dataset examples present on thi
   - [Spark – Read multiple text files into single RDD?](https://sparkbyexamples.com/apache-spark-rdd/spark-read-multiple-text-files-into-a-single-rdd/)
   - [Spark load CSV file into RDD](https://sparkbyexamples.com/apache-spark-rdd/spark-load-csv-file-into-rdd/)
   - [Different ways to create Spark RDD](https://sparkbyexamples.com/apache-spark-rdd/different-ways-to-create-spark-rdd/)
+  - [Spark – How to create an empty RDD?](https://sparkbyexamples.com/apache-spark-rdd/spark-how-to-create-an-empty-rdd/)
+  - [Spark RDD Transformations with examples](https://sparkbyexamples.com/apache-spark-rdd/spark-rdd-transformations/)
+  - [Spark RDD Actions with examples](https://sparkbyexamples.com/apache-spark-rdd/spark-rdd-actions/)
+  - [Spark Pair RDD Functions](https://sparkbyexamples.com/apache-spark-rdd/spark-pair-rdd-functions/)
+  - [Spark Repartition() vs Coalesce()](https://sparkbyexamples.com/spark/spark-repartition-vs-coalesce/)
+  - [Spark Shuffle Partitions](https://sparkbyexamples.com/spark/spark-shuffle-partitions/)
+  - [Spark Persistence Storage Levels](https://sparkbyexamples.com/spark/spark-persistence-storage-levels/)
+  - [Spark RDD Cache and Persist with Example](https://sparkbyexamples.com/apache-spark-rdd/spark-rdd-cache-and-persist-example/)
+  - [Spark Broadcast Variables](https://sparkbyexamples.com/spark/spark-broadcast-variables/)
+  - [Spark Accumulators Explained](https://sparkbyexamples.com/spark/spark-accumulators/)
+  - [Convert Spark RDD to DataFrame | Dataset](https://sparkbyexamples.com/apache-spark-rdd/convert-spark-rdd-to-dataframe-dataset/)
 
 ## Spark DataFrame Examples 
   - [Creating Spark DataFrame example](https://sparkbyexamples.com/spark/different-ways-to-create-a-spark-dataframe/)