Update lita requirement to version 2.6.0
Merge pull request #9 from markmcconachie/master

Update lita requirement to version 2.6.0
Implement campfire disconnect
Merge pull request #5 from josacar/bug/5-implement-disconnect

Implement disconnect method on connector
Bump version
Bump version to release to rubygems
Update dependencies
Update lita, bundler and rspec dependencies
Add tinder overriding options
Update documentation to include tinder option
Rename tinder to tinder_options in config options
Fix handling of optional config options
Add lita adapter metadata plugin type
Use symbol array in config options
Stubs Lita.logger on disconnect
Implement set_topic and change doubles to instance_doubles
Relax rspec version dependency
Bump lita version
Use each_with_object on optional setting parser
Add gem badge in readme