Fetches a collection of meeting room calendars from the Google Calendar API and exposes a list of the upcoming events and whether the room is available.

• MEETING_ROOM_CLIENT_ID - the email address of a Google API service account to which the calendars are shared
• MEETING_ROOM_API_KEY - a base64 string (strict-encoded) of the .pem key for your Google API service account
• MEETING_ROOM_CALENDARS - a list of calendar IDs and names to use, using the format <name>,<calendarId>;<name>,<calendarId>
• PORT - the port on which the API will run

I'm new to Go and so there's likely to be a lot here which isn't quite right, or breaking convention. Pointers and pull requests are welcome :)