diff --git a/README.md b/README.md
index cf9aaf79d..006044137 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# datascience
+# datascience 
 
 A Berkeley library for introductory data science.
 
@@ -13,6 +13,8 @@ For an example of usage, see the [Berkeley Data 8 class](http://data8.org/).
 
 [![Build Status](https://travis-ci.org/data-8/datascience.svg?branch=master)](https://travis-ci.org/data-8/datascience)
 [![Coverage Status](https://coveralls.io/repos/data-8/datascience/badge.svg?branch=master&service=github)](https://coveralls.io/github/data-8/datascience?branch=master)
+## Introduction
+It is complete package of all the Data Science packages. It includes functionalities of pandas, matplotlib and other packages.
 
 ## Installation
 
diff --git a/docs/sample.csv b/docs/sample.csv
index ecee95a65..079710b14 100644
--- a/docs/sample.csv
+++ b/docs/sample.csv
@@ -1,4 +1,11 @@
-x,y,z
-1,10,100
-2,11,101
-3,12,102
+id,x,y,z
+1,10,100,200
+2,11,101,201
+3,12,102,202
+4,13,103,203
+5,14,104,204
+6,15,105,205
+7,16,106,206
+8,17,107,207
+9,18,108,208
+10,19,109,209