Added a simple way to time program run times

.gitignore

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+#Ignore all Visual Studio Code files
+.vscode/*

Stopwatch.lua

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+--luaClasses/Stopwatch.lua
+--Matthew Ellison
+-- Created: 2-1-19
+--Modified: 2-1-19
+--This is a simple class to be used to time runtimes of various things within programs
+
+Stopwatch = {
+	startTime = 0,
+	stopTime = 0
+}
+Stopwatch.__index = Stopwatch
+
+function Stopwatch:create()
+	local timer = {}
+	setmetatable(timer, Stopwatch)
+	return timer
+end
+
+function Stopwatch:start()
+	self.startTime = os.clock()
+	self.stopTime = 0
+end
+
+function Stopwatch:stop()
+	self.stopTime = os.clock()
+end
+
+function Stopwatch:reset()
+	self.startTime = 0
+	self.stopTime = 0
+end
+
+function Stopwatch:getTime()
+	return (self.stopTime - self.startTime)
+end
+
+function Stopwatch:getMilliseconds()
+	return math.floor((self:getTime() * 1000))
+end
+
+function Stopwatch:getSeconds()
+	return self:getTime()
+end
+
+function Stopwatch:getMinutes()
+	return (self:getTime() / 60)
+end