[enh] add quick answer functionality with an example answerer

tests/unit/test_answerers.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+from mock import Mock
+
+from searx.answerers import answerers
+from searx.testing import SearxTestCase
+
+
+class AnswererTest(SearxTestCase):
+
+    def test_unicode_input(self):
+        query = Mock()
+        unicode_payload = u'árvíztűrő tükörfúrógép'
+        for answerer in answerers:
+            query.query = u'{} {}'.format(answerer.keywords[0], unicode_payload)
+            self.assertTrue(isinstance(answerer.answer(query), list))