Add note about PySD version

Author: enekomartinmartinez

README.md

@@ -28,5 +28,7 @@ If you want to implement a recipe, you can then make a copy of the notebook you
 
 To download the cookbook in its entirity, use [this link](https://github.com/SDXorg/PySD-Cookbook/archive/master.zip) or select one of the options in the righthand panel of the github window.
 
+At least PySD 3.0.0 is needed to run these notebooks. However, we recommend using the latest available PySD version ([check also for its requirements](https://pysd.readthedocs.io/en/master/installation.html)).
+
 ### Structure of this repository
 As several recipes may use the same models or the same data, I've separated the recipes into a directory called [Analyses](https://github.com/SDXorg/PySD-Cookbook/tree/master/source/analyses) where individual recipes are grouped by category. The [Data](https://github.com/SDXorg/PySD-Cookbook/tree/master/source/data) directory contains all of the data used in the analyses, and in most cases notebooks describing the data, where it came from, and how it is formatted. The [Models](https://github.com/SDXorg/PySD-Cookbook/tree/master/source/models) directory includes the various model files that are used throughout the analyses.

docs/index.rst

@@ -9,13 +9,12 @@ Simple recipes for powerful analysis of system dynamics models
 
 Quickstart
 ----------
-1. Download and install `Anaconda Python 3.7+ <https://www.continuum.io/downloads>`_
-2. Install PySD with pip using the command :code:`pip install pysd` at your command prompt
-3. `Download this cookbook <https://github.com/SDXorg/PySD-Cookbook/archive/master.zip>`_
+1. `Install PySD <https://pysd.readthedocs.io/en/master/installation.html>`_ (we recommend using the latest available PySD version) and needed `requirements for the notebooks <https://github.com/SDXorg/PySD-Cookbook/blob/master/requirements.txt>`_
+2. `Download this cookbook <https://github.com/SDXorg/PySD-Cookbook/archive/master.zip>`_
    and unzip it to a working directory
-4. Navigate your command prompt to the working directory just created
-5. Launch ipython notebook with the command :code:`ipython notebook` at your command prompt
-6. In the ipython browser, open :code:`source\analyses\getting_started\Hello_World_Teacup.ipynb`
+3. Navigate your command prompt to the working directory just created
+4. Launch ipython notebook with the command :code:`ipython notebook` at your command prompt
+5. In the ipython browser, open :code:`source\analyses\getting_started\Hello_World_Teacup.ipynb`
 
 
 How to use this cookbook