Calibration Analysis

[YoungDon Choi]

[Andrew Bennett]

We may want to support multiple frameworks for calibration/optimization. Some starting points are:

https://dakota.sandia.gov/
http://www.eng.buffalo.edu/~lsmatott/Ostrich/OstrichMain.html

So perhaps we can define a base Calibration class and standardize the interface for both of these.

[Andrew Bennett]

This is now being addressed in #108