Add tap-snapshots/*.js to default ignore list (#385)

Fixes #384

Author: coreyfarrell

lib/options-manager.js

@@ -19,7 +19,8 @@ const DEFAULT_IGNORE = [
 	'{tmp,temp}/**',
 	'**/*.min.js',
 	'vendor/**',
-	'dist/**'
+	'dist/**',
+	'tap-snapshots/*.js'
 ];
 
 const DEFAULT_EXTENSION = [