Update to 0.5.1 to include supported python versions

GRID_LRT/__init__.py

@@ -12,11 +12,11 @@ __version__ = "0.6.0"
 __author__ = "Alexandar P. Mechev"
 __copyright__ = "2019 Alexandar P. Mechev"
 __credits__ = ["Alexandar P. Mechev", "Natalie Danezi", "J.B.R. Oonk"]
-__bibtex__ = """@misc{apmechev:2018,
+__bibtex__ = """@misc{apmechev:2019,
       author       = {Alexandar P. Mechev} 
-      title        = {apmechev/GRID_LRT: v0.5.0},
+      title        = {apmechev/GRID_LRT: v0.5.1},
       month        = sep,
-      year         = 2018,
+      year         = 2019,
       doi          = {10.5281/zenodo.1438833},
       url          = {https://doi.org/10.5281/zenodo.1438833}
     }"""

README.md

@@ -2,6 +2,7 @@
 [![Build Status](https://travis-ci.org/apmechev/GRID_LRT.svg?branch=master)](https://travis-ci.org/apmechev/GRID_LRT)
 [![License: GPL v3](https://img.shields.io/badge/License-GPL%20v3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
 [![PyPI version](https://badge.fury.io/py/GRID-LRT.svg)](https://badge.fury.io/py/GRID-LRT)
+[![version status](https://img.shields.io/pypi/pyversions/GRID_LRT.svg)](https://pypi.python.org/pypi/GRID_LRT)
 [![alt text](http://apmechev.com/img/git_repos/GRID_LRT_clones.svg "github clones since 2017-01-25")](https://github.com/apmechev/github_clones_badge)
 [![codecov Coverage](https://codecov.io/gh/apmechev/GRID_LRT/branch/master/graph/badge.svg?precision=1)](https://codecov.io/gh/apmechev/GRID_LRT)
 [![alt text](http://apmechev.com/img/git_repos/pylint/GRID_LRT.svg "pylint score")](https://github.com/apmechev/pylint-badge)