Feature to WKT transformation

this contributes to issue #4
Feature to WKT transformation

this contributes to issue #4
Merge branch '1.4' of github.com:Terradue/DotNetGeoJson into 1.4
Merge branch '1.4' of github.com:Terradue/DotNetGeoJson into 1.4
Merge branch '1.4' of github.com:Terradue/DotNetGeoJson into 1.4
GeometryFactory.SplitWorldExtent for gml
GeometryFactory.SplitWorldExtent for gml
Merge branch '1.4' of github.com:Terradue/DotNetGeoJson into 1.4
WKT to POINT feature corrected
WKT to POINT feature corrected
Merge branch '1.4' of github.com:Terradue/DotNetGeoJson into 1.4
gml poslist pattern correction
ready for 1.4.0

Signed-off-by: Emmanuel Mathot <emmanuel.mahot@gmail.com>
Merge branch 'refs/heads/1.4'
Merge branch 'master' of github.com:Terradue/DotNetGeoJson