Switched to seconds (from milliseconds) precision for parsing observation files.
Merge pull request #79 from emartinez-usgs/to-seconds

Switched to seconds (from milliseconds) precision for parsing observatio...
Updated ObservatoryFactory to convert server-side seconds to and from client-side milliseconds
Added comments to methods
Merge pull request #80 from jmfee-usgs/seconds-for-32bit

Seconds for 32bit