Added script for prepare composer file
Removed flame/module package
Updated nette package version
Added support for test multiple version of nette package
Removed gravatar class
Renamed class from GravatarHelper to Gravatar
Renamed test file
Added FileNotFound exception
Added kappa/utils package
Added UrlNotFound exception
Added InvalidArgument exception
Created class for easy work with gravatar service
Added 'DirectoryNotFoundException'
Added curl extension
Added kappa/filesystem package
Updated composer files for tests
Added compatibility for nette 2.1
Added cache storage for faster display avatar
Changed return value type
Added support for cache gravatar