Merge pull request #1 from wotek/develop

Added Hash::destroy method
Add destroy method
Merge branch 'master' of git://github.com/wotek/redis

# Via Wojciech Zalewski (1) and Wojtek Zalewski (1)
* 'master' of git://github.com/wotek/redis:
  Added Hash::destroy method
Merge pull request #2 from wotek/develop

Fixed invalid return value in set method.