- added min/max values to './php/dice/TwentySideDie.php'
- added method TwentySideDie::roll(); returns random int between min/max value
- added method EncounterManager::add(Actor); adds an actor to the encounter
- added method EncounterManager::sort(); sorts the list of actors in descending order according to total initiative (dice roll + mod)
- added attributes to EncounterManager
- added method EncounterManager::step(); steps the encounter by one turn
- added method EncounterManager::remove(aId); removes actor from encounter via id
- added method EncounterManager::getJSON; builds a map of encounter data and converts it to JSON
- added comments to './php/encountermanager/EncounterManager.php'