fix(READEME): change erlang version to 23

fix(READEME): change erlang version to 23

feat(QuickCheck): add 'instance Arbitrary (a, b)'

feat(QuickCheck): add 'instance Arbitrary (a, b)'

build: add task 'make clean' (hamler-lang#217)

build: add task 'make clean' (hamler-lang#217)

chore: add ci for build packages

chore: add ci for build packages

docs(guide): correct grammar mistakes

docs(guide): correct grammar mistakes