PRs welcome and new tag line

Author: orbeckst

README.md

@@ -1,6 +1,7 @@
 # MDAnalysisData
 
 [![docs](https://img.shields.io/badge/docs-latest-brightgreen.svg)](https://www.mdanalysis.org/MDAnalysisData/)
+[![PRs welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
 [![DOI](https://zenodo.org/badge/147885122.svg)](https://zenodo.org/badge/latestdoi/147885122)
 
 Access to data for workshops and extended tests of MDAnalysis.

docs/conf.py

@@ -116,7 +116,7 @@
     'logo' : "logos/MDAnalysisData-logo.png",
     'logo_name': True,
     'logo_text_align': "left",
-    'description': "Datasets for MDAnalysis",
+    'description': "Biomolecular simulation datasets",
     'github_user': "MDAnalysis",
     'github_repo': "MDAnalysisData",
     'github_button': False,

docs/index.rst

@@ -5,7 +5,7 @@
  MDAnalysisData: MD data for testing, learning, and benchmarking
 =================================================================
 
-|doi|
+|zenodo| |PRwelcome|
 
 :Release: |release|
 :Date: |today|
@@ -22,25 +22,30 @@ interface to download, cache, and access these externally hosted data
 sets.
 
 The files can be easily used with MDAnalysis_ but the package is
-standalone, however, and can be used for any purpose, for instance, to
-provide examples for workshops and classes.
+standalone and can be used for any purpose, for instance, to
+provide examples for workshops and classes, and, of course, to try out
+other tools for analyzing simulations.
 
 Datasets are released under an `open license`_ that conforms to the `Open
 Definition 2.1`_ that allows free use, re-use, redistribution, modification,
 separation, for any purpose and without a charge. All  code
 can be found in the public GitHub repository `mdanalysis/MDAnalysisData`_.
 
-This library is **under active development**. We use `semantic
+This library is *under active development*. We use `semantic
 versioning`_ to indicate clearly what kind of changes you may expect
 between releases. Please raise any issues or questions in the
 `Issue Tracker`_. `Contributions of data sets`_ and code in the form
 of pull requests are very welcome.
 
-.. |doi| image:: https://zenodo.org/badge/147885122.svg
+.. |zenodo| image:: https://zenodo.org/badge/147885122.svg
     :alt: Zenodo DOI
     :scale: 100%
     :target: https://zenodo.org/badge/latestdoi/147885122
 
+.. |PRwelcome| image:: https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square
+   :alt: PRs welcome
+   :target: http://makeapullrequest.com
+
 .. _`MDAnalysis`: https://www.mdanalysis.org
 .. _`mdanalysis/MDAnalysisData`: https://github.com/MDAnalysis/MDAnalysisData
 .. _figshare: https://figshare.com/