added site_name to documentation as per internal changes
new events_site markdown
New Format for meta.method and data prototype

If agreed upon, changes need to be made to the .json and the api-documentation maker.
Added response_fields_meta_method; 

changed response_fields to response_fields_data as a result.
fixed as per comment in pr
missing comma and changed to response_fields_meta
Fixed " typo
Merge pull request #30 from uWaterloo/events-extend-api

Events extend api