big update: README, Makefiles, examples

generator/Makefile

generator/README

generator/README.org

generator/_test.ml

generator/go.sh

generator/js_of_ast.ml

generator/main.ml

generator/parse_type.ml

generator/print_tast.ml

generator/run.debug.sh

generator/run.sh

generator/stdlib.mli

generator/stdlib_js/stdlib.debug.js

generator/stdlib_js/stdlib.js

generator/stdlib_ml/stdlib.cmi

generator/stdlib_ml/stdlib.mli

generator/tests/calc.cmi

generator/tests/calc.ml

generator/tests/js/calc.js

generator/tests/js/let.js