Add tinder overriding options
Update documentation to include tinder option
Rename tinder to tinder_options in config options
Fix handling of optional config options
Use symbol array in config options
Stubs Lita.logger on disconnect
Use each_with_object on optional setting parser
Merge pull request #10 from josacar/feature/add-tinder-overriding-options

Add tinder overriding option by config