How Do I Create A Generator?

Yii 2.0 General Discussions
1

im trying to create a generator by using an existing skeleton

using: https://github.com/schmunk42/yii2-giiant

my generator is located: https://github.com/mithereal/yii2-fixture

the settings are as listed in the readme

but im getting error ReflectionException

Class mithereal\fixture\Generator does not exist

can someone help resolve this??