Added mockery as a dev dependency
Updated tests to use composer autoloader
Added ability to register injectors specific to actor types in the ActorFactory and ActorFactoryFactory
Added composer generated files to ignore list
Updated existing README with new syntax
Improved readability of substitution tag regexs
Removed Actor related code whose concept has been renamed to Companion Object and has been abstracted into it's own project which depends on this one
Improved explanation for Value Substitution in README