Merge pull request #77 from ustroetz/master

Added recipe to convert an OGR File to a Raster
Change project a geometry to project a layer because that is what it really does.  Fixes issue #69
fix for issue #78, break out vector and raster layer examples explicitly
fix for issue #79, adding subtle gotchas and tricks section
fix for issue #83, adding links to GDAL/OGR Python API Docs
Merge pull request #82 from ustroetz/master

Fixes #58
Merge pull request #84 from thebigspoon/docfixes

Documentation Restructuring for 3 issues