Updated documentation to v0.2.2
Changed the list of stations in test_options
Completed documentation
Small change
Completed documentation
Added doc on clustering process
Finalized documentation
Completed documentation
Finalized documentation
Finalized documentation
Completed documentation
Merge pull request #95 from nlanget/master

Documentation
Fixed test code to rewrite hdf ttime files

When testing and playing about between versions, some hdf5 files get
left around with the wrong internal format. To make sure we are testing
the current version, re-create and re-write the hdf5 files on the fly.
Made processing test more supple

To deal with different numerical precision on different machines.
Updated version number to 0.2.3
Merged master to u-grids

Update u-grids with documentation etc. from current master
Fixed minor interface bugs