Always send output to flake callback

This change ensures that the protractor flake callback will always receive the output log even if the first test pass succeeds with no failures.

src/index.ts

@@ -24,7 +24,7 @@ function flake (options: object | undefined = {}, callback: Function | undefined
 
   function handleTestEnd (status: number, output = '') {
     if (status === 0) {
-      callback(status)
+      callback(status, output)
     } else {
       if (++testAttempt <= parsedOptions.maxAttempts) {
         logger.log('info', `\nUsing ${parser.name} to parse output\n`)