Modified haid_plot to accept a mapvizier object and to accept arguments passed to dplyr:filter in order to subest the mapvizier object.  This function now automatically sets names accoring to Andrew's renaming deseign pattern, since I wanted to get this done fast.  In the future we should require the names within the function to conform with standard mapvizier object names.
Merge pull request #18 from chrishaid/haid_plot_add_mapvizier_hack

Modified haid_plot to accept a mapvizier object and to accept arguments ...