Update README.rst

give citation section a boost

README.rst

@@ -34,6 +34,15 @@ science field for Solar System Geometry. Please visit the NAIF website for more
 *IMPORTANT*: I have no current affiliation with NASA, NAIF, or JPL. The
 code is provided "as is", use at your own risk.
 
+Citing SpiceyPy
+---------------
+
+If you are publishing work that uses SpiceyPy, please cite
+SpiceyPy and the SPICE toolkit. The citation information
+for SPICE can be found on the NAIF website. To cite SpiceyPy please
+utilize the zenodo DOI badge at the top of this readme. To cite information 
+about SpiceyPy, usership, and how it works please cite my 2017 abstract, available with citation info at : `<https://ui.adsabs.harvard.edu/#abs/2017LPICo1986.7081A>`__.
+
 Installation
 ------------
 
@@ -64,14 +73,6 @@ Feedback is always welcomed, if you discover that a function is not working as e
 submit an issue detailing how to reproduce the problem. If you utilize SpiceyPy frequently 
 please consider contributing to the project by citing me using the zenodo DOI above.
 
-Citing SpiceyPy
----------------
-
-If the use of SpiceyPy is used in a publication, please consider
-citing SpiceyPy and the SPICE toolkit. The citation information
-for SPICE can be found on the NAIF website. To cite SpiceyPy please
-utilize the zenodo DOI badge at the top of this readme.
-
 Known Working Environments:
 ---------------------------