Created a timing script that produces graphs and saves out times from kernels

src/MATLAB/+Performance/AddConstantGraph.m

src/MATLAB/+Performance/AddImageWithGraph.m

src/MATLAB/+Performance/ContrastEnhancementGraph.m

src/MATLAB/+Performance/EntropyFilterGraph.m

src/MATLAB/+Performance/GaussianFilterGraph.m

src/MATLAB/+Performance/MedianFilterGraph.m

src/MATLAB/+Performance/PlotResults.m

src/MATLAB/+Performance/RunTiming.m

src/MATLAB/+Performance/StdFilterGraph.m

src/MATLAB/+Performance/SumArrayGraph.m

src/MATLAB/timeMatlabVsCuda.m