Add more docstrings

src/WeatherNews.jl

@@ -74,10 +74,21 @@ function get_schedule(zone)
     return map(massage_fn(zone, s[1][:hour] == "00:00"), s)
 end
 
+"""
+Fetch the weathernews schedule and translate segment dates to the local time zone.
+
+# Examples
+```jldoctest
+julia> s = WeatherNews.get_schedule()
+```
+"""
 function get_schedule()
     get_schedule(localzone())
 end
 
+"""
+The DB module contains code for managing the schedule database.
+"""
 module DB
 include("./db.jl")
 end