Add notes, fix timezone

Mapped the Nike+ note to Runkeeper's note.

Nike+ activities are in UTC, whereas Runkeeper wants them in local
time; this was resulting in Runkeeper run start times being off by
several hours (since I'm at -5:00 UTC).  Hack around this by
subtracting the local gmt offset.  It would be better to calculate the
gmt offset of the gps location, but this is good enough for me.

app.rb

@@ -89,14 +89,18 @@ def signed_in?
 
       runkeeper_activity = {
         type: 'Running',
-        start_time: nike_activity.start_time_utc,
+        start_time: nike_activity.start_time_utc + nike_activity.start_time_utc.gmt_offset, # hack: adjust time by gmt_offset to get in local time, which is what Runkeeper wants
         total_distance: nike_activity.distance * 1000,
         duration: duration,
         detect_pauses: true,
         total_calories: nike_activity.calories.to_f,
-        average_heart_rate: nike_activity.average_heart_rate.to_f
+        average_heart_rate: nike_activity.average_heart_rate.to_f,
       }
 
+      if nike_activity.tags.note
+        runkeeper_activity.notes = nike_activity.tags.note
+      end
+
       if a.gps && nike_activity.geo && nike_activity.geo.waypoints
         index = -1
         total = nike_activity.geo.waypoints.size