pre-commit for git to check json files syntax are correct.

gistfile1.sh

#!/bin/bash

if git-rev-parse --verify HEAD >/dev/null 2>&1; then
    against=HEAD
else
    against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

exec 1>&2

flag=0
for FILE in `git diff --name-only $against --` ; do
    # Check if the file contains 'debugger'
    if [ ${FILE: -4} == "json" ]; then
  echo "Validating ${FILE}..."
	ERROR=`/usr/local/share/npm/bin/jsonlint -c \`pwd\`/$FILE`
	if [ $? -ne 0 ]; then
		ERROR="$FILE: $ERROR"
		flag=1
		ERRORS="${ERRORS}\n${ERROR}" | sed s/^\n//g
	fi
    fi 
done

if [ $flag -ne 0 ]; then
	exit 1
fi
exit