fixed some errors and way better README

examples/multiple_tabs.js

@@ -0,0 +1,134 @@
+const se_scraper = require('./../index.js');
+
+const Cluster = {
+    CONCURRENCY_PAGE: 1, // shares cookies, etc.
+    CONCURRENCY_CONTEXT: 2, // no cookie sharing (uses contexts)
+    CONCURRENCY_BROWSER: 3, // no cookie sharing and individual processes (uses contexts)
+};
+
+let keywords = ['New York',
+    'Los Angeles',
+    'Chicago',
+    'Houston',
+    'Philadelphia',
+    'Phoenix',
+    'San Antonio',
+    'San Diego',
+    'Dallas',
+    'San Jose',
+    'Austin',
+    'Indianapolis',
+    'Jacksonville',
+    'San Francisco',
+    'Columbus',
+    'Charlotte',
+    'Fort Worth',
+    'Detroit',
+    'El Paso',
+    'Memphis',
+    'Seattle',
+    'Denver',
+    'Washington',
+    'Boston',
+    'Nashville-Davidson',
+    'Baltimore',
+    'Oklahoma City',
+    'Louisville/Jefferson County',
+    'Portland',
+    'Las Vegas',
+    'Milwaukee',
+    'Albuquerque',
+    'Tucson',
+    'Fresno',
+    'Sacramento',
+    'Long Beach',
+    'Kansas City',
+    'Mesa',
+    'Virginia Beach',
+    'Atlanta',
+    'Colorado Springs',
+    'Omaha',
+    'Raleigh',
+    'Miami',
+    'Oakland',
+    'Minneapolis',
+    'Tulsa',
+    'Cleveland',
+    'Wichita',
+    'Arlington',
+    'New Orleans',
+    'Bakersfield',
+    'Tampa',
+    'Honolulu',
+    'Aurora',
+    'Anaheim',
+    'Santa Ana',
+    'St. Louis',
+    'Riverside',
+    'Corpus Christi',
+    'Lexington-Fayette',
+    'Pittsburgh',
+    'Anchorage',
+    'Stockton',
+    'Cincinnati',
+    'St. Paul',
+    'Toledo',
+    'Greensboro',
+    'Newark',
+    'Plano',
+    'Henderson',
+    'Lincoln',
+    'Buffalo',
+    'Jersey City',
+    'Chula Vista',
+    'Fort Wayne',
+    'Orlando',
+    'St. Petersburg',
+    'Chandler',
+    'Laredo',
+    'Norfolk',
+    'Durham',
+    'Madison',
+    'Lubbock',
+    'Irvine',
+    'Winston-Salem',
+    'Glendale',
+    'Garland',
+    'Hialeah',
+    'Reno',
+    'Chesapeake',
+    'Gilbert',
+    'Baton Rouge',
+    'Irving',
+    'Scottsdale',
+    'North Las Vegas',
+    'Fremont',
+    'Boise City',
+    'Richmond',
+    'San Bernardino'];
+
+let config = {
+    search_engine: 'bing',
+    debug: false,
+    verbose: true,
+    keywords: keywords,
+    num_pages: 1, // how many pages per keyword
+    output_file: 'examples/results/bing.json',
+    log_ip_address: false,
+    headless: true,
+    puppeteer_cluster_config: {
+        timeout: 10 * 60 * 1000, // max timeout set to 10 minutes
+        monitor: false,
+        concurrency: Cluster.CONCURRENCY_PAGE, // one scraper per tab
+        maxConcurrency: 7, // scrape with 7 tabs
+    }
+};
+
+function callback(err, response) {
+    if (err) {
+        console.error(err)
+    }
+    console.dir(response, {depth: null, colors: true});
+}
+
+se_scraper.scrape(config, callback);