Updated configuration with Bitset PECL extension info

.travis.yml

@@ -11,10 +11,11 @@ before_script:
     # install phpredis extension.
     - sh -c "git clone https://github.com/nicolasff/phpredis/ && cd phpredis && phpize && ./configure && make && sudo make install " > /dev/null
     - echo "extension=redis.so" >> `php --ini | grep "Loaded Configuration" | sed -e "s|.*:\s*||"`
+    - pecl install bitset
     # composer install
     - wget http://getcomposer.org/composer.phar
     - php composer.phar install --dev
 
 
 script:
-    - bin/atoum -mcn 1 -d tests/units
+    - bin/atoum -d tests/units

README.rst

@@ -43,6 +43,8 @@ Bitter uses `Redis <http://redis.io>`_  with version **>=2.6**.
 
 **Note**: Every key created in Redis will be prefixed by ``bitter:``, temp keys by ``bitter_temp:``.
 
+Bitter uses `Bitset PECL extension <http://pecl.php.net/package/Bitset>`_  with version **=1.0.1** for the ``getIds`` method.
+
 Basic usage
 -----------
 Create a Bitter with a Redis client (Predis as example):

composer.json

@@ -15,7 +15,8 @@
         "issues": "https://github.com/jeremyFreeAgent/Bitter/issues"
     },
     "require": {
-        "php": ">=5.3.3"
+        "php": ">=5.3.3",
+        "ext-bitset": "1.0.1"
     },
     "require-dev": {
         "predis/predis": "0.8.*",