Introduce --quiet-ignored flag

This flag is an alternative to `--quiet`, which suppresses _all_
warnings, rather than just "ignored files".

README.md

@@ -16,12 +16,22 @@ browserify your_file.js -t eslintify
 
 ### "quiet" mode
 
-Functionally equivalent to the [ESLint CLI](http://eslint.org/docs/user-guide/command-line-interface) flag `--quiet`: it causes warnings to be silently ignored. The default is for warnings to be outputted along with errors.
+Functionally equivalent to the [ESLint CLI](http://eslint.org/docs/user-guide/command-line-interface) flag `--quiet`: it causes _all_ warnings to be silently ignored. The default is for warnings to be outputted along with errors.
 
 ```bash
 browserify your_file.js -t [ eslintify --quiet ]
 ```
 
+If you only wish to suppress "ignored file" warnings, use the `--quiet-ignored` flag instead.
+
+### "ignored file" warnings
+
+If you choose to exclude files via `.eslintignore` or elsewhere and the linter is run over them (due to them being in the globbing path), it will produce a warning. `eslint@3` introduced a way for these unnecessary warnings to be suppressed; the implementation in this module is as follows:
+
+```bash
+browserify your_file.js -t [ eslintify --quiet-ignored ]
+```
+
 ### "continuous" mode
 
 If you wish to get linting reports in the console but not break the build, enable "continuous mode" like so:

index.js

@@ -20,7 +20,7 @@ function lint(file, options) {
     }
 
     function end() {
-        var results = cli.executeOnText(data, file).results;
+        var results = cli.executeOnText(data, file, !options['quiet-ignored']).results;
 
         if (options.quiet) {
             results = eslint.CLIEngine.getErrorResults(results);