add RTD badge

dwhswenson · dwhswenson · commit 1170641e63f3 · 2020-02-12T13:22:27.000+01:00
(had to do it anyway; need a commit to trigger Travis now!)
diff --git a/README.md b/README.md
@@ -1,4 +1,5 @@
 [![Build Status](https://travis-ci.com/openpathsampling/openpathsampling-cli.svg?branch=master)](https://travis-ci.com/openpathsampling/openpathsampling-cli)
+[![Documentation Status](https://readthedocs.org/projects/openpathsampling-cli/badge/?version=latest)](https://openpathsampling-cli.readthedocs.io/en/latest/?badge=latest)
 [![Coverage Status](https://coveralls.io/repos/github/openpathsampling/openpathsampling-cli/badge.svg?branch=master)](https://coveralls.io/github/openpathsampling/openpathsampling-cli?branch=master)
 [![Maintainability](https://api.codeclimate.com/v1/badges/0d1ee29e1a05cfcdc01a/maintainability)](https://codeclimate.com/github/openpathsampling/openpathsampling-cli/maintainability)
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,5 @@`
`1`	`1`	`[![Build Status](https://travis-ci.com/openpathsampling/openpathsampling-cli.svg?branch=master)](https://travis-ci.com/openpathsampling/openpathsampling-cli)`
	`2`	`+[![Documentation Status](https://readthedocs.org/projects/openpathsampling-cli/badge/?version=latest)](https://openpathsampling-cli.readthedocs.io/en/latest/?badge=latest)`
`2`	`3`	`[![Coverage Status](https://coveralls.io/repos/github/openpathsampling/openpathsampling-cli/badge.svg?branch=master)](https://coveralls.io/github/openpathsampling/openpathsampling-cli?branch=master)`
`3`	`4`	`[![Maintainability](https://api.codeclimate.com/v1/badges/0d1ee29e1a05cfcdc01a/maintainability)](https://codeclimate.com/github/openpathsampling/openpathsampling-cli/maintainability)`
`4`	`5`