Added suppport for slim option key in config.yml, added site config as context to slim so it can be accessed, all features added both to layout and partial. Bumped version to 0.8.3
Updated readme with info about options and context
Small update to readme in titles to improve readability
Bumped to version 0.9.0, added SlimContext to all slim templates so you can access configuration and share variables across all slim templates
Improved todo in readme
Minor improvements