Added New Distribution
Added New Distribution

Added a distribution to distributions.py that takes all the experimental
parameters to be the same value, chosen uniformly at random, with
Gaussian noise added to each of the parameters.

QInfer/python-qinfer,ihincks/python-qinfer,csferrie/python-qinfer,MichalKononenko/python-qinfer,Alan-Robertson/python-qinfer,whitewhim2718/python-qinfer