DOC: Update readme

README.rst

@@ -11,6 +11,8 @@ fsleyes-widgets
 .. image:: https://img.shields.io/pypi/v/fsleyes-widgets.svg
    :target: https://pypi.python.org/pypi/fsleyes-widgets/
 
+.. image:: https://anaconda.org/conda-forge/fsleyes-widgets/badges/version.svg
+   :target: https://anaconda.org/conda-forge/fsleyes-widgets
 
 
 The ``fsleyes-widgets`` package contains a collection of GUI widgets and
@@ -19,9 +21,38 @@ used by `fsleyes-props <https://git.fmrib.ox.ac.uk/fsl/fsleyes/props>`_ and
 `FSLeyes <https://git.fmrib.ox.ac.uk/fsl/fsleyes/fsleyes>`_,
 
 
+Installation
+------------
+
+
+You can install ``fsleyes-widgets`` via pip. If you are using Linux, you need
+to install wxPython first, as binaries are not available on PyPI. Change the
+URL for your specific platform::
+
+    pip install -f https://extras.wxpython.org/wxPython4/extras/linux/gtk2/ubuntu-16.04/ wxpython
+
+
+Then install ``fsleyes-widgets`` like so::
+
+    pip install fsleyes-widgets
+
+
+``fsleyes-widgets`` is also available on
+`conda-forge <https://conda-forge.org/>`_::
+
+    conda install -c conda-forge fsleyes-widgets
+
+
+Dependencies
+------------
+
+
 All of the dependencies of ``fsleyes-widgets`` are listed in the
 `requirements.txt <requirements.txt>`_ file.
 
+Requirements for running tests and building the documentation are listed in the
+`requirements-dev.txt <requirements-dev.txt>`_ file.
+
 
 Documentation
 -------------
@@ -30,12 +61,26 @@ Documentation
 `sphinx <http://http://sphinx-doc.org/>`_. You can build the API documentation
 by running::
 
+    pip install -r requirements-dev.txt
     python setup.py doc
 
 The HTML documentation will be generated and saved in the ``doc/html/``
 directory.
 
 
+Tests
+-----
+
+Run the test suite via::
+
+    pip install -r requirements-dev.txt
+    python setup.py test
+
+
+Many of the tests assume that a display is accessible - if you are running on
+a headless machine, you may need to run the tests using ``xvfb-run``.
+
+
 Contributing
 ------------