memcache-async

Merge pull request #30 from vaikzs/support_set_flags

release 0.10.1

Merge pull request #33 from zaidoon1/fix-increment-decrement-error-handling

Merge branch 'master' of https://github.com/vavrusa/memcache-async into support_set_flags

retaining add and set methods and creating *_with_flags methods for backward compat.