Merge pull request #4 from PseudoKnight/master

Updated to reflect latest changes in CH builds (2678+)
Thanks PseudoKnight.
Updated to be compatible with CommandHelper 3.3.1-2705 and Dynmap 1.9.4.
Added dm_default_markerset_id(), dm_markerset_max_zoom(), dm_set_markerset_max_zoom(), dm_marker_min_zoom(), dm_set_marker_min_zoom(), dm_marker_max_zoom() and dm_set_marker_max_zoom().
Added LifeCycle class.
Finished compatibility with CH builds 2707+
Fixed warning.