Merge pull request #18 from phydrus/dev

Update bib and coverage badge

README.md

@@ -7,7 +7,7 @@
 <a href="https://pypi.python.org/pypi/pyet"> <img src=https://img.shields.io/pypi/v/pyet.svg> </a>
 [![Documentation Status](https://readthedocs.org/projects/pyet/badge/?version=latest)](https://pyet.readthedocs.io/en/latest/?badge=latest)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/7ed73a2e80784ccf90317c1af8c0cc17)](https://app.codacy.com/gh/phydrus/pyet?utm_source=github.com&utm_medium=referral&utm_content=phydrus/pyet&utm_campaign=Badge_Grade_Dashboard)
-
+[![Codacy Badge](https://app.codacy.com/project/badge/Coverage/e49f23e356f441688422ec32cfcf6aaa)](https://www.codacy.com/gh/phydrus/pyet/dashboard?utm_source=github.com&utm_medium=referral&utm_content=phydrus/pyet&utm_campaign=Badge_Coverage)
 
 pyet is an open source python package for calculating reference and potential 
 evaporation (PE). Currently eighteen methods for calculating PE are 

joss_paper/paper.bib

@@ -26,7 +26,7 @@ @article{priestley1972assessment
   volume={100},
   number={2},
   pages={81--92},
-  year={1972}
+  year={1972},
   doi={10.1175/1520-0493(1972)100<0081:OTAOSH>2.3.CO;2},
 }
 
@@ -60,7 +60,7 @@ @article{thornthwaite1948approach
   number={1},
   pages={55--94},
   year={1948},
-  publisher={JSTOR}
+  publisher={JSTOR},
   doi={10.2307/210739},
 }
 
@@ -190,7 +190,7 @@ @article{abtew1996evapotranspiration
   number={3},
   pages={465--473},
   year={1996},
-  publisher={Wiley Online Library}
+  publisher={Wiley Online Library},
   doi={10.1111/j.1752-1688.1996.tb04044.x},
 }