Removed curly brace usage for string access

Removed curly brace usage for string access

Changed PHP test versions from 5 to 7

Changed PHP test versions from 5 to 7

Merge pull request #5 from dorantor/master

Added support for persistent connection for Memcached.

Update composer.json

Fixed storage call

Merge pull request #4 from dorantor/master

Fixed broken server config merge.

added readme

travis and hhvm