Merge branch 'master' of https://github.com/lkugler/DART-WRF

docs/source/index.rst

 Welcome to the DART-WRF documentation!
-===================================
+======================================
 
 DART-WRF is a Python package to run an Ensemble Data Assimilation system with the software packages DART and WRF.
 
 
+Installation
+------------
+
+At the command line: 
+
+.. code-block:: shell
+   git clone https://github.com/lkugler/DART-WRF.git
+   cd DART-WRF
+   pip install -e .
+
 
 .. toctree::
    :maxdepth: 2
-   :caption: Contents:
+   :caption: Tutorials:
 
    readme
    tutorial1
    tutorial2
 
 
-Indices and tables
-==================
+
+API
+===
 
 * :ref:`genindex`
 * :ref:`modindex`