Fixed the haversine formula to calculate distance between 2 points properly
renamed intermediary variable
Added mocha tests for GeoPoint
Fixed indentation
Fixed constructor parameters and added bdd tests for constructor validation
Additional formatting
Added test for toString()
Added support for inline parameters like: new GeoPoint(-34, 150)
Merge pull request #370 from simoami/master

Fixed the haversine formula to calculate distance between 2 points