When providing browserEndpoint option, pagedJS correctly connects to it

Issue https://gitlab.pagedmedia.org/tools/pagedjs-cli/issues/42.

1. Passing browserEndpoint from command line args to Printer
2. If the browser is remote, don't send an HTML file to it, but its content.
3. If browser is remote, use puppeteer.connect instead of puppeteer.launch

bin/paged

@@ -39,7 +39,7 @@ program
           "added to the HTML document before rendering. This is useful for " +
           "adding custom pagedjs handlers. The option can be repeated.",
           collect, [])
-  .option("--browserEndpoint", "Use a remote Chrome server with browserWSEndpoint")
+  .option("--browserEndpoint <browserEndpoint>", "Use a remote Chrome server with browserWSEndpoint")
   .parse(process.argv);
 
 function collect(value, previous) {
@@ -115,6 +115,7 @@ if (typeof input === "string") {
     allowedPaths: program.allowedPaths,
     allowedDomains: program.allowedDomains,
     additionalScripts: program.additionalScript,
+    browserEndpoint: program.browserEndpoint
   };
 
   if (program.forceTransparentBackground) {