stats, examples/helloworld/stats: runtime panic from non-existent method

[odeke-em]

If currently you run the stats helloworld example
https://github.com/census-instrumentation/opencensus-python/blob/9cd14d36338ad55238317274189330e3b1162bb5/examples/stats/helloworld/main.py

in using OpenCensus 0.1.5 I get this error

Traceback (most recent call last):
  File "main.py", line 67, in <module>
    main()
  File "main.py", line 59, in main
    measure_map.record(tag_map)
  File "/usr/local/lib/python2.7/site-packages/opencensus-0.1.5-py2.7.egg/opencensus/stats/measurement_map.py", line 53, in record
    self.measure_to_view_map.record(
AttributeError: 'dict' object has no attribute 'record'

[songy23]

The helloworld example is working fine with the latest snapshot. This should have been fixed in #246.

Please feel free to reopen if this issue happen again.