Add git hooks to tools

- Place these in your .git/hooks/ directory

tools/get_version.bat

 @echo off
 (
-git log -1 --pretty="format:{\"commit\": \"%%H\", \"commit_short\": \"%%h\", \"version\": \"%%ad\", \"url\": \"https://github.com/bui/taiko-web/\"}" --date="format:%%y.%%m.%%d"
+git log -1 --pretty="format:{\"commit\": \"%%H\", \"commit_short\": \"%%h\", \"version\": \"%%ad\"}" --date="format:%%y.%%m.%%d"
 ) > ../version.json

tools/get_version.sh

-git log -1 --pretty="format:{\"commit\": \"%H\", \"commit_short\": \"%h\", \"version\": \"%ad\", \"url\": \"https://github.com/bui/taiko-web/\"}" --date="format:%y.%m.%d" > ../version.json
+#!/bin/bash
+toplevel=$( git rev-parse --show-toplevel )
+git log -1 --pretty="format:{\"commit\": \"%H\", \"commit_short\": \"%h\", \"version\": \"%ad\"}" --date="format:%y.%m.%d" > "$toplevel/version.json"

tools/hooks/post-checkout

+#!/bin/bash
+./tools/get_version.sh

tools/hooks/post-commit

+#!/bin/bash
+./tools/get_version.sh

tools/hooks/post-merge

+#!/bin/bash
+./tools/get_version.sh

tools/hooks/post-rewrite

+#!/bin/bash
+./tools/get_version.sh