support for multible browsers and proxies

examples/quickstart.js

@@ -1,11 +1,11 @@
 const se_scraper = require('./../index.js');
 
 let config = {
-    search_engine: 'duckduckgo',
+    search_engine: 'google',
     debug: false,
     verbose: false,
-    keywords: ['news'],
-    num_pages: 2,
+    keywords: ['news', 'se-scraper'],
+    num_pages: 1,
     output_file: 'data.json',
 };