[Geojson] Fixing problems in section 4

[Keith Jenkins]

On Thu, Mar 13, 2008 at 12:41 PM, Sean Gillies <sgillies at frii.com> wrote:
>  The default case is already done exactly right in the spec. We could
>  make it more clear that almost every open source GIS user could use the
>  default instead of specifying "EPSG:4326".

I'd agree that this should be emphasized.  The main conflict regarding
coordinate order seems to be rooted in the problem that EPSG:4326 is
defined in lat,lon order as opposed to the standard x,y.  So the
simplest thing would be to avoid making reference to it.

Keith