Changelog entries for 0.1.0 and CITATION info (#37)

Add the stater changelog marking the first release.
Also add citation info and a CITATION.rst file referencing the Zenodo archive.

CITATION.rst

@@ -0,0 +1,11 @@
+Citing RockHound
+================
+
+This is research software **made by scientists**. Citations help us justify the effort
+that goes into building and maintaining this project.
+
+If you used RockHound in your research, please consider citing it:
+
+   Uieda, L., and Soler, S.R. (2019). Rockhound: Download geophysical models/datasets
+   and load them in Python (Version 0.1.0). Zenodo. https://doi.org/10.5281/zenodo.3086002
+

README.rst

@@ -39,6 +39,9 @@ Part of the `Fatiando a Terra <https://www.fatiando.org>`__ project
 .. image:: https://img.shields.io/gitter/room/fatiando/fatiando.svg?style=flat-square
     :alt: Chat room on Gitter
     :target: https://gitter.im/fatiando/fatiando
+.. image:: https://img.shields.io/badge/doi-10.5281%2Fzenodo.3086002-blue.svg?style=flat-square
+    :alt: Digital Object Identifier for the Zenodo archive
+    :target: https://doi.org/10.5281/zenodo.3086002
 
 
 .. placeholder-for-doc-index
@@ -89,6 +92,18 @@ Contacting Us
   where you can ask questions and leave comments.
 
 
+Citing RockHound
+----------------
+
+This is research software **made by scientists** (see `AUTHORS.md
+<https://github.com/fatiando/rockhound/blob/master/AUTHORS.md>`__). Citations help us
+justify the effort that goes into building and maintaining this project. If you used
+RockHound for your research, please consider citing us.
+
+See our `CITATION.rst file <https://github.com/fatiando/rockhound/blob/master/CITATION.rst>`__
+to find out more.
+
+
 Contributing
 ------------
 
@@ -148,3 +163,4 @@ Documentation for other versions
 * `Development <https://www.fatiando.org/rockhound/dev>`__ (reflects the *master* branch on
   Github)
 * `Latest release <https://www.fatiando.org/rockhound/latest>`__
+* `v0.1.0 <https://www.fatiando.org/rockhound/v0.1.0>`__

doc/changes.rst

@@ -0,0 +1,28 @@
+.. _changes:
+
+Changelog
+=========
+
+Version 0.1.0
+-------------
+
+*Released on: 2019/05/21*
+
+.. image:: https://zenodo.org/badge/DOI/10.5281/zenodo.3086002.svg
+   :target: https://doi.org/10.5281/zenodo.3086002
+
+Fist release of Rockhound. Easily download geophysical models and datasets (PREM,
+CRUST1.0, ETOPO1 and more) and load them into Python data structures (pandas, numpy,
+xarray).
+
+Available models and datasets:
+
+- ETOPO1 [AmanteEakins2009]_
+- PREM [Dziewonsky1981]_
+- Bedmap2 [BEDMAP2]_
+- Age of the oceanic lithosphere [Muller2008]_
+
+Features:
+
+- Use `Pooch <https://www.fatiando.org/pooch>`__ to download remote files, check if they
+  are not corrupted and decompress files if necessary.

doc/citing.rst

@@ -0,0 +1,3 @@
+.. _citing:
+
+.. include:: ../CITATION.rst

doc/index.rst

@@ -8,7 +8,9 @@
     :caption: Documentation
 
     install.rst
+    citing.rst
     registry.rst
     gallery/index.rst
     api/index.rst
     references.rst
+    changes.rst