Merge pull request #4 from zelgerj/master

refactoring due to server component split off
Update composer.json
Merge branch 'master' of https://github.com/techdivision/TechDivision_MemcacheProtocol
Merge pull request #5 from zelgerj/master

removed server dependency
Merge branch 'master' of https://github.com/techdivision/TechDivision_MemcacheProtocol
removed php version 5.3