Made README more beautiful

* removed whitespace
* added correct syntax highlighting
* made wording nicer

Author: apfelbox

README.md

@@ -2,7 +2,7 @@
 A class to help with creating downloads for files in PHP.
 
 
-## Advice
+## Tip
 If you can use direct downloads, you should just use them.
 This class is for providing downloads of files out of PHP, for example if you want to provide a download to a temporarily created file.
 
@@ -11,45 +11,37 @@ This class is for providing downloads of files out of PHP, for example if you wa
 
 
 ## Create a download for a file on your file system
-```
-<?php
-
-    $fileDownload = FileDownloader::createFromFilePath("/path/to/file.pdf");
-    $fileDownload->sendDownload("download.pdf");
+```php
+$fileDownload = FileDownloader::createFromFilePath("/path/to/file.pdf");
+$fileDownload->sendDownload("download.pdf");
 ```
 
 
 ## Create a download for a file via file pointer
-```
-<?php
-
-    $file = /* your file, somewhere opened with fopen() or tmpfile(), etc.. */;
-    $fileDownload = new FileDownloader($file);
-    $fileDownload->sendDownload("download.pdf");
+```php
+$file = /* your file, somewhere opened with fopen() or tmpfile(), etc.. */;
+$fileDownload = new FileDownloader($file);
+$fileDownload->sendDownload("download.pdf");
 ```
 
 
 ## Create a download for a file via the content
-```
-<?php
-
-    $content = "This is the content of the file:";
-    $fileDownload = FileDownloader::createFromString($content);
-    $fileDownload->sendDownload("download.txt");
+```php
+$content = "This is the content of the file:";
+$fileDownload = FileDownloader::createFromString($content);
+$fileDownload->sendDownload("download.txt");
 ```
 
 
 For example, you can create downloads for PDF files, generated by Zend (or any other library):
 
-```
-<?php
-
-    $pdf = new Zend_Pdf();
-    $page = $pdf->newPage(Zend_Pdf_Page::SIZE_A4);
-    $pdf->pages[] = $page;
+```php
+$pdf = new Zend_Pdf();
+$page = $pdf->newPage(Zend_Pdf_Page::SIZE_A4);
+$pdf->pages[] = $page;
 
-    /* draw content in the pdf ... */
+/* draw content in the pdf ... */
 
-    $fileDownload = FileDownloader::createFromString($pdf->render());
-    $fileDownload->sendDownload("download.pdf");
+$fileDownload = FileDownloader::createFromString($pdf->render());
+$fileDownload->sendDownload("download.pdf");
 ```