Follow the configPath to the real path

This is in case the configPath is a symlink. Which happens to me with
my dotfiles

Author: jonrohan

lib/csscomb.js

@@ -247,7 +247,7 @@ CSScomb.getCustomConfigPath = function getCustomConfigPath(configPath) {
     configPath = configPath || path.join(process.cwd(), '.csscomb.json');
 
     // If we've finally found a config, return its path:
-    if (fs.existsSync(configPath)) return configPath;
+    if (fs.existsSync(configPath)) return fs.realpathSync(configPath);
 
     // If we are in HOME dir already and yet no config file, return a default
     // one from our package.