add example showing rubicon w/ DataProfiler

[ryanSoley]

Is your feature request related to a problem? Please describe

after seeing the DataProfiler demo at PyCon, we decided we could show an example of rubicon tracking data profiles over a project/experiments' lifetime

Describe the solution you'd like

• create an example that shows experiments profiling each incoming dataset and logging the profiles to rubicon
• use rubicon to illustrate a change in data profiles over experiments
• reference new data profiler integration example in "logging training metadata" example, as it is basically an extension of logging training metadata
• title the new example "Integrate with DataProfiler" and add it to the "How to..." section of the docs