Golang Metrics End-to-End coupla bugs

[DazWilkin]

https://opencensus.io/quickstart/go/metrics/#end-to-end-code

1. Views are registered twice: LL62-66 and LL94-97
2. startTime referenced but not defined, perhaps before L118:

startTime:=time.Now()

[mattwelke]

Looks like these issues are still present in the end to end docs example.

[dashpole]

For issues with the opencensus website, it is probably best to open an issue there. This repository tracks issues related to the stackdriver exporters.

The code that is used in the website appears to be an older version of https://github.com/census-instrumentation/opencensus-go/blob/master/examples/quickstart/stats.go, so that would probably be a good place to start.