Update timing_model.py

param_help did not actually return the help string. Now it does
Update utils.py

If the input string was given as an integer, the conversion failed. 
There might be better solutions to the problem than the one I propose, this is mostly to raise awareness of the issue.
Adjusted setup.py to allow an actual install with different modules
Adjusted setup.py to include authors
Merge remote-tracking branch 'upstream/master'
Update toa.py

Solves two problems: a missing ephemeris from SPICE (JUPITERBARYCENTER -> "JUPITER BARYCENTER") and a non-existing variable (plan_pvs, it was defined as plan_poss)
Merge pull request #6 from vhaasteren/master

Make pint installable
Merge pull request #5 from matteobachetti/patch-2

Update utils.py
Merge pull request #9 from matteobachetti/patch-4

Update toa.py
Merge pull request #4 from matteobachetti/patch-1

Update timing_model.py
Cleanup of warnings and some tests
planet shapiro bugfix and clock correction bugfix
Initial fitter almost working...
More fitter changes.  Started examples directory.
Added TEMPO files
Added some example files for example fitter script
Minor cleanups.  Example doesn't work because of strange angle issue...
Update toa.py

Corrects a bug when using barycentered data (observatory is not found, because "Barycenter" is not a key of `observatories`)
Update toa.py

Avoids raising ValueError if the observatory is Barycenter; corrects syntax error (using `is` instead of `==` for string comparison)
Create bt.py

This class provides an implementation of the BT model by Blandford & Teukolsky 1976, ApJ, 205, 580. Based on BTmodel.C in Tempo2. Tested to agree with the Tempo2 version to ~ 10ps