Use require to import config file

This allows to import `.template-lintrc.js` file.

Author: bobisjan

lib/rules/check-hbs-template-literals.js

@@ -57,7 +57,7 @@ module.exports = {
       const extendedOptions = context.options[1]
       const filename = extendedOptions.ConfigFile
       if (filename && fs.existsSync(filename)) {
-        config = JSON.parse(fs.readFileSync(filename))
+        config = require(filename)
         linter = new TemplateLinter({config})
       }
     }