Merge pull request #3 from EVS-ATMOS/master

remerging
plots at 1 modelhour over the immediately available hrrr files off the website
notebook over adding functionality to spec_plot to allow it to graph a set of model hours rather than times over one model hour
added in functionaility for plotting over model hours and for producing contour plots over height and time for any parameter
changes insignificant
plots a contour over height and time
initial design of contour graphing function
final testing of contour plotting function
Merge pull request #14 from mjohnson541/master

New plotting functions and notebooks