[ts.manip.netcdf] add netcdf conversion module
[ts.manip] add timstream manipulation module
[travis] apt-get update before installing
[setup.py] add netcdf4 to python install depends
[setup.py] bump docopt version
[travis] install netcdf and hdf5 headers
[travis] fix hdf5 dev package name

tried installing a virtual pacakge. Derp
[setup.py] add ts.maniupulate to setup.py packages
Merge pull request #5 from kdmurray91/dev

timestream manipulation subpackage