Erroneous Configuration instructions

[svsudhir]

In the readme.md you mention that the configuration must have the following line.

sitemap:
file: "/sitemap.xml"

However in the sitemap_generator.rb file you are using this to check the config key.
@config['filename'] = sitemap_config['filename'] || SITEMAP_FILE_NAME

Please rectify the configuration instructions.

For newbies, if you clearly mention what the name of configuration file should be, it would help.

Thanks
SVS