performance measure for naive added
added performance measure for the first optimization
added performance measure for the blas implementation and a script to execute all performance measures for a tagged version at a time
added performance measure for opt2
added performance measure for opt3
run again performance measure for opt3
added performance measurement for opt4
rerum performance measurement for opt2
added performance measure for opt5
added a python script to create plots for benchmarks and also the created plots (perfOpt1 and perfNaive had to be adapted in order to fit into the script)
changed the performance plot script in order to display the time performance in a logarithmic scale vor better visibility
Merge branch 'documentation'