Clear cache when adding custom attributes to Soap API

When adding custom attributes to the soap API don’t forget to clean the following cache

• Magento admin -> system -> cache management -> flush magento cache
• Magento admin -> system -> cache management -> flush cache storage
• Magento cache (website/var/cache/*)
• PHP wdsl cache, can be found in /tmp/ or in php.ini (this one is very important !)