Update README.md

README.md

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 Learn Javascript
 ======
+## About Javascript
+JavaScript is a programming language used to make webpages interactive. It is what gives a page life—the interactive elements and animation that engage a user. If you've ever used a search box on a home page, checked a live baseball score on a news site, or watched a video, JavaScript is probably running through it.
 
 This book will teach you the basics of programming and Javascript. Whether you are an experienced programmer or not, this book is intended for everyone who wishes to learn the JavaScript programming language.
 

arrays/README.md

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 # Arrays
 
-Arrays are a fundamental part of programming. An array is a list of data. We can store a lot of data in one variable, which makes our code more readable and easier to understand. It also makes it much easier to perform functions on related data.
+Arrays are a fundamental part of programming.An array is a special variable, which can hold more than one value at a time also it is true that an array is a list of data. We can store a lot of data in one variable, which makes our code more readable and easier to understand. It also makes it much easier to perform functions on related data.
 
 The data in arrays are called **elements**.
 
@@ -9,4 +9,4 @@ Here is a simple array:
 ```javascript
 // 1, 1, 2, 3, 5, and 8 are the elements in this array
 var numbers = [1, 1, 2, 3, 5, 8];
-```
+```