Create initializeSHP function

Begin consolidating redundant functions
Consolidate into initializeSHP function
Merge intersect()/intersectEQ(), added hazard menu

New intersect function takes field names/field data types as parameters.
GUI drop-down menu allows switch between earthquake, hurricane.
Merge pull request #1 from hereidk/ConsolidateGIS

Consolidate gis, merge redundant functions, add hazard selection GUI