remove hardcoded sleep() in Google Image

examples/gimage.js

@@ -0,0 +1,24 @@
+const se_scraper = require('./../src/node_scraper.js');
+
+(async () => {
+    let browser_config = {
+        debug_level: 1,
+        output_file: '',
+    };
+
+    let scrape_job = {
+        search_engine: 'google_image',
+        keywords: ['manaslu', 'everest', 'pitcairn'],
+        num_pages: 1,
+    };
+
+    var scraper = new se_scraper.ScrapeManager(browser_config);
+
+    await scraper.start();
+
+    var results = await scraper.scrape(scrape_job);
+
+    console.dir(results, {depth: null, colors: true});
+
+    await scraper.quit();
+})();