Update README.md

Author: secondtruth

README.md

@@ -2,7 +2,7 @@ PHP PHAR Compiler
 =================
 
 [![Latest Stable](http://img.shields.io/packagist/v/secondtruth/phar-compiler.svg)](https://packagist.org/p/secondtruth/phar-compiler)
-[![Build Status](https://img.shields.io/travis/secondtruth/php-phar-compiler.svg)](https://travis-ci.org/secondtruth/php-phar-compiler)
+[![Build Status](https://img.shields.io/travis/com/secondtruth/php-phar-compiler.svg)](https://travis-ci.com/github/secondtruth/php-phar-compiler)
 [![Scrutinizer](http://img.shields.io/scrutinizer/g/secondtruth/php-phar-compiler.svg)](https://scrutinizer-ci.com/g/secondtruth/php-phar-compiler)
 [![Coverage](http://img.shields.io/scrutinizer/coverage/g/secondtruth/php-phar-compiler.svg)](https://scrutinizer-ci.com/g/secondtruth/php-phar-compiler)
 [![License](http://img.shields.io/packagist/l/secondtruth/phar-compiler.svg)](https://packagist.org/p/secondtruth/phar-compiler)
@@ -20,7 +20,7 @@ $compiler->addIndexFile('bin/mycoolprogram.php');
 $compiler->addDirectory('libraries');
 
 $compiler->addFile('vendor/autoload.php');
-$compiler->addDirectory('vendor/composer', '!*.php');
+$compiler->addDirectory('vendor/composer', '!*.php'); // Exclude non-PHP files
 $compiler->addDirectory('vendor/.../Component/Console', ['Tests/*', '!*.php']);
 
 $compiler->compile("$outputDir/mycoolprogram.phar");