Update Readme.MD for improving the first introduction

README.md

@@ -33,3 +33,69 @@ __Want to contribute?__ [Fork us](https://github.com/PHPOffice/PHPWord/fork) or
 
 __Want to know more?__ Read the full documentation of PHPWord on [Read The Docs](http://phpword.readthedocs.org/en/develop/).
 
+## Requirements
+* PHP 5.3+
+* PHP [Zip](http://php.net/manual/en/book.zip.php) extension
+* PHP [XML Parser](http://www.php.net/manual/en/xml.installation.php) extension
+
+### Optional PHP extensions
+* PHP [GD](http://php.net/manual/en/book.image.php) extension
+* PHP [XMLWriter](http://php.net/manual/en/book.xmlwriter.php) extension
+* PHP [XSL](http://php.net/manual/en/book.xsl.php) extension
+
+## Installation
+
+It is recommended that you install the PHPWord library [through composer](http://getcomposer.org/). To do so, add
+the following lines to your ``composer.json``.
+
+```json
+{
+    "require": {
+       "phpoffice/phpword": "dev-master"
+    }
+}
+```
+
+## Basic usage
+
+The following is a basic example of the PHPWord library. More examples are provided in the [samples folder](samples/).
+
+```php
+$PHPWord = new PHPWord();
+
+// Every element you want to append to the word document is placed in a section.
+// To create a basic section:
+$section = $PHPWord->createSection();
+
+// After creating a section, you can append elements:
+$section->addText('Hello world!');
+
+// You can directly style your text by giving the addText function an array:
+$section->addText('Hello world! I am formatted.',
+    array('name'=>'Tahoma', 'size'=>16, 'bold'=>true));
+
+// If you often need the same style again you can create a user defined style
+// to the word document and give the addText function the name of the style:
+$PHPWord->addFontStyle('myOwnStyle',
+    array('name'=>'Verdana', 'size'=>14, 'color'=>'1B2232'));
+$section->addText('Hello world! I am formatted by a user defined style',
+    'myOwnStyle');
+
+// You can also put the appended element to local object like this:
+$fontStyle = new PHPWord_Style_Font();
+$fontStyle->setBold(true);
+$fontStyle->setName('Verdana');
+$fontStyle->setSize(22);
+$myTextElement = $section->addText('Hello World!');
+$myTextElement->setFontStyle($fontStyle);
+
+// Finally, write the document:
+$objWriter = PHPWord_IOFactory::createWriter($PHPWord, 'Word2007');
+$objWriter->save('helloWorld.docx');
+
+$objWriter = PHPWord_IOFactory::createWriter($PHPWord, 'ODText');
+$objWriter->save('helloWorld.odt');
+
+$objWriter = PHPWord_IOFactory::createWriter($PHPWord, 'RTF');
+$objWriter->save('helloWorld.rtf');
+```