[enh] google engine added

#!/usr/bin/env python

from urllib import urlencode

from json import loads

categories = ['general']

url = 'https://ajax.googleapis.com/'

search_url = url + 'ajax/services/search/web?v=1.0&start=0&rsz=large&safe=off&filter=off&{query}'  # noqa

def request(query, params):

    params['url'] = search_url.format(query=urlencode({'q': query}))

    return params

def response(resp):

    results = []

    search_res = loads(resp.text)

    if not search_res.get('responseData', {}).get('results'):

        return []

    for result in search_res['responseData']['results']:

        results.append({'url': result['unescapedUrl'],

                        'title': result['titleNoFormatting'],

                        'content': result['content']})

    return results