add hackpad.com into excluding sites

#3 should be done ASAP.
keep resolving #4
delete directory `lyParser_ruby`

Files within the directory is to parse data from g0v/laweasyread-data,
which is not the point of this repository.
For their usage, see [commit 7a6f025 of
kong0107/zhLawEasyRead](https://github.com/kong0107/zhLawEasyRead/commit/7a6f025b519985f96c784f7f5c1971ad1f06fd90);
there are functions whcih transfer numeric texts between arabic,
chinese, and roman numerals.
Start setting Gruntfile

For #1 and #7. Not ready yet; still watching tutorials.