added centerOn, changed maxZoom method#15

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theJenix wants to merge 2 commits intosephiroth74:masterfrom theJenix:master

+50-42

Commits on Oct 8, 2012

Added centerOn method
theJenix
committed

Commits on Jan 20, 2013

Removed superfluous changes, name changes, commented code, etc.
theJenix
committed