Update license from Apache 2.0 to MIT

[niACS]

State Pattern Actor 1.1.0.10 was released under the Apache 2.0 license. Since the initial commit doesn't change anything, I did not build a new package just to update the license.

The license should be updated to use the same license as other projects in Open Source Actor Framework.

[niACS]

This is resolved with the package build that resolves this issue: #3