add zend filesystem cache
Merge branch 'zendCache' of github.com:nachinius/aCrawler into zendCache

* 'zendCache' of github.com:nachinius/aCrawler:
  add zend filesystem cache

Conflicts:
	src/Nachinius/Command/Components/ZendCacheAdapter.php
	src/Nachinius/Command/LocationCommand.php