SBT project setup with dependencies
Basic UDF decode URL values
Change project name to remove spaces
Return url formatted invalid value.

This prevents NULL values further up the stack and makes it easier
to diagnose parsing problems vs empty values
Setup project to work with IntelliJ
Add UDF to compute Haversine Distance
Add some documentation about the UDFs available
Add credit to rosetta code for haversine formula
Add docs on how to build the project to the README