added basic tutorial on pyspark

Author: pyspark-in-action

README.md

@@ -11,18 +11,19 @@ to be used for production environment.
 
 PySpark Examples and Tutorials
 ==============================
-* wordcount: classic word count
-* bigrams: find frequency of bigrams
-* basic-join: basic join of two relations R(K, V<sub>1</sub>), S(K, V<sub>2</sub>)
-* basic-map: basic mapping of RDD elements
-* basic-add: how to add all RDD elements together
-* basic-multiply: how to multiply all RDD elements together
-* top-N: find top-N and bottom-N
-* combine-by-key: find average by using combineByKey()
-* basic-filter: how to filter RDD elements
-* basic-average: how to find average
-* cartesian: rdd1.cartesian(rdd2)
-* basic-sort: sortByKey ascending/descending
+* [Classic Word Count](./tutorial/wordcount)
+* [Find Frequency of Bigrams](./tutorial/bigrams)
+* [Join of Two Relations R(K, V<sub>1</sub>), S(K, V<sub>2</sub>)](./tutorial/basic-join)
+* [Basic Mapping of RDD Elements](./tutorial/basic-map)
+* [How to add all RDD elements together](./tutorial/basic-add)
+* [How to multiply all RDD elements together](./tutorial/basic-multiply)
+* [Find Top-N and Bottom-N](./tutorial/top-N)
+* [Find average by using combineByKey()](./tutorial/combine-by-key)
+* [How to filter RDD elements](./tutorial/basic-filter)
+* [How to find average](./tutorial/basic-average)
+* [Cartesian Product: rdd1.cartesian(rdd2)](./tutorial/cartesian)
+* [Sort By Key: sortByKey() ascending/descending](./tutorial/basic-sort)
+* [How to Add Indices](./tutorial/add-indices)
 
 [How to Minimize the Verbosity of Spark](./howto/minimize_verbosity.md) 
 =======================================================================