Remove Slice to varlen support, since it's broken and requires more development.
Merged github.com/kisielk/go-hdf5
Tests for h5g.go, and simplified CreateDataset method.
Add Location interface. Location specifies methods that are common to File and Group, and should aid in constructing a higher-level interface.
Merge pull request #9 from echlebek/master

Removed slice/varlen support, also cleaned up docs a bit.