some rename

	modified:   .gitignore
	renamed:    tests/c-test.rkt -> tests/hello-world.rkt
Create README.md
add Makefile to tests

	modified:   mpcc.rkt
	new file:   tests/Makefile
Merge branch 'master' of https://github.com/waterret/MPCC

Conflicts:
	tests/hello-world.rkt