add core samples to HDF5 file
ENH: add shoreline to hdf5 file
generalize _get_or_create_group helper so it can work off f.root
add import and read methods for pick lines to survey_io and hdf5
add a --with-picks argument to application command to import pick files
fixup: rm debug print statetment from import_pick_files
load pick lines from hdf5 when calling survey_line.load_data()
CLN: clean up test_survey_data_session.py
- use a tempdir for the h5file and delete it in tearDown
- rm residual .h5 file from git repo
- misc whitespeace/pep8 cleanup
bugfix: survey lines should have independent pick lines
pull current surface lines from SDI bin files when importing them
Merge branch 'enh/hdf5-depth-lines' into enh/hdf5-everything

Conflicts:
	hydropick/model/survey_line.py
Merge branch 'enh/hdf5-core-samples' into enh/hdf5-everything
allow HDF5 arrays be overwritten when importing data
bug: line_name incorrectly parsed for .pic files causing them to not be
imported
Merge pull request #44 from twdb/enh/hdf5-everything

Enh/hdf5 (mostly) everything