Added coveralls.io configuration

.travis.yml

@@ -11,3 +11,10 @@ matrix:
 
 before_script:
     - composer install
+
+script:
+  - mkdir -p build/logs
+  - phpunit --coverage-clover build/logs/clover.xml
+
+after_script:
+  - php vendor/bin/coveralls -v

README.md

@@ -4,6 +4,7 @@ Brick\Math
 Provides the `BigInteger` and `BigDecimal` classes to work with arbitrary precision numbers.
 
 [![Build Status](https://secure.travis-ci.org/brick/math.png?branch=master)](http://travis-ci.org/brick/math)
+[![Coverage Status](https://coveralls.io/repos/brick/math/badge.png?branch=master)](https://coveralls.io/r/brick/math?branch=master)
 
 Installation
 ------------

composer.json

@@ -15,7 +15,8 @@
         "php": ">=5.5"
     },
     "require-dev": {
-        "phpunit/phpunit": "3.7.*"
+        "phpunit/phpunit": "*",
+        "satooshi/php-coveralls": "dev-master"
     },
     "autoload": {
         "psr-4": {