added missing search params and search results metadata

tweepy/api.py

@@ -630,7 +630,7 @@ class API(object):
     search = bind_api(
         path = '/search/tweets.json',
         payload_type = 'search_results',
-        allowed_param = ['q', 'lang', 'locale', 'since_id', 'geocode', 'show_user', 'max_id', 'since', 'until', 'result_type']
+        allowed_param = ['q', 'lang', 'locale', 'since_id', 'geocode', 'max_id', 'since', 'until', 'result_type', 'count', 'include_entities', 'from', 'to', 'source']
     )
 
     """ trends/daily """

tweepy/models.py

@@ -238,6 +238,8 @@ class SearchResults(ResultSet):
         results.refresh_url = metadata.get('refresh_url')
         results.completed_in = metadata.get('completed_in')
         results.query = metadata.get('query')
+        results.count = metadata.get('count')
+        results.next_results = metadata.get('next_results')
 
         for status in json['statuses']:
             results.append(Status.parse(api, status))