Add code coverage by coveralls.io. (#13)

Author: Ekman

.coveralls.yml

@@ -0,0 +1,3 @@
+service_name: travis-ci
+coverage_clover: /tmp/coverage-clover.xml
+json_path: /tmp/coveralls-upload.json

.travis.yml

@@ -10,6 +10,8 @@ install: composer install --no-interaction --classmap-authoritative
 
 script: vendor/bin/phpunit --configuration phpunit.xml
 
+after_success: vendor/bin/php-coveralls --verbose
+
 notifications:
   email: false
 

README.md

@@ -1,6 +1,7 @@
 # Luhn Algorithm
 
 [![Build Status](https://travis-ci.org/Ekman/Luhn-Algorithm.svg?branch=master)](https://travis-ci.org/Ekman/Luhn-Algorithm)
+[![Coverage Status](https://coveralls.io/repos/github/Ekman/Luhn-Algorithm/badge.svg)](https://coveralls.io/github/Ekman/Luhn-Algorithm)
 
 This is an implementation of the Luhn Algorithm for PHP and HHVM. The Luhn Algorithm is
 used to validate things like credit cards and national identification numbers.

composer.json

@@ -38,6 +38,7 @@
 	},
 	"require-dev": {
 		"phpunit/phpunit": "^6.0",
-		"friendsofphp/php-cs-fixer": "^2.0"
+		"friendsofphp/php-cs-fixer": "^2.0",
+		"php-coveralls/php-coveralls": "^2.0"
 	}
 }

phpunit.xml

@@ -1,10 +1,17 @@
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	 xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/6.5/phpunit.xsd"
 	 bootstrap="vendor/autoload.php">
-	
 	<testsuites>
 		<testsuite name="Luhn Algorithm tests">
 			<directory>tests/</directory>
 		</testsuite>
 	</testsuites>
+    	<filter>
+        	<whitelist>
+            		<directory suffix=".php">src</directory>
+        	</whitelist>
+    	</filter>
+    	<logging>
+        	<log type="coverage-clover" target="/tmp/coverage-clover.xml"/>
+    	</logging>
 </phpunit>