hadley/bigrquery — pull request #17 by totogo (2014-05-31 03:17:05+00:00)
Title: Added support for data type timestamp in BigQuery

As I got the error: Don't know how to convert type timestamp, the data type is added here.
Based on the description of BigQuery, Timestamp is "A decimal number specifying the number of seconds since the epoch." which is a time since 1970-01-01, the conversion function added in the code.