Add LICENSE file

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
deploy.sh - add deployment target

This is to allow deployment of only a single target in the future.

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
Convert git-grep-filter to use Haskell & Shelly.hs

Have always wanted to use Haskell for practical purposes for a while, but
it's seems so difficult to do so. Shelly.hs comes to the rescue here.

In this patch, git-grep-filter is ported to use Haskell, mainly using the
Shelly.hs library (https://github.com/yesodweb/Shelly.hs).

The Ruby git-grep-filter will remain for historical purposes.

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
Shift ruby git-grep-filter to oldruby folder

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
deploy.sh - deploy Haskell version of git-grep-filter

and use build.sh for building git-grep-filter

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
setup.sh - add `cabal configure` line

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>