Update README file.

	$ vi ./cetus_output/openarc_kernel.cu

	$ vi ./cetus_output/matmul.cpp

	- Task4: learn how to use a commandline option needed for manual profiling: forceSyncKernelCall

	$ cd ${openarcexamples}/matmul

	//Open the OpenARC configuration file and set forceSyncKernelCall to 1 (e.g., forceSyncKernelCall=1)

	$ vi ./matmul/openarcConf.txt

	//Run O2GBuild.script script again.

	$ ./O2GBuild.script

	//Check  generated output files

	$ vi ./cetus_output/matmul.cpp

	- Task5: learn how to use a commandline option to set default number of workers: defaultNumWorkers

	$ cd ${openarcexamples}/matmul

	//Open the OpenARC configuration file and set defaultNumWorkers to 128 (e.g., defaultNumWorkers=128)

	$ vi ./matmul/openarcConf.txt

	//Run O2GBuild.script script again.

	$ ./O2GBuild.script

	//Check  generated output files

	$ vi ./cetus_output/openarc_kernel.cu

	$ vi ./cetus_output/matmul.cpp

	- Task6: learn how to use a commandline option to set the maximum number of gangs: maxNumGangs

	$ cd ${openarcexamples}/matmul

	//Open the OpenARC configuration file and set maxNumGangs to 32 (e.g., maxNumGangs=32)

	$ vi ./matmul/openarcConf.txt

	//Run O2GBuild.script script again.

	$ ./O2GBuild.script

	//Check  generated output files

	$ vi ./cetus_output/openarc_kernel.cu

	$ vi ./cetus_output/matmul.cpp