update readme

Author: Jerry-Ma

README.rst

@@ -4,22 +4,39 @@ TolTECA Tutorials
 This repository contains tutorials for TolTEC data analysis.
 
 To see the tutorials rendered as static web pages, see the `TolTECA tutorials
-site <http://to.be.set>`_.
+site <https://toltec-astro.github.io/tolteca_tutorials/rst-tutorials/basic_obs_data.html>`_.
+
+How to run
+----------
 
 To run the tutorials interactively, you'll need to make sure you have `Jupyter
 notebook <http://jupyter.org/>`_ installed, then clone or download this
 repository. The notebook files themselves live in the ``tutorials`` directory
 of this repository, organized by the names of the tutorials.
 
+The tutorials depends on TolTECA python packages and some other supporting
+packages. To install those packages, run the following (preferrably in a
+dedicated virtual environment):
+
+.. code::
+
+    $ cd tolteca_tutorials
+    $ pip install -r pip-requirements.txt
+
+
 You can also get started quickly using `Binder <http://mybinder.org>`_ to run the tutorials in
 your web browser within a remote server:
 
 .. image:: http://mybinder.org/badge.svg
     :target: https://mybinder.org/v2/gh/astropy/astropy-tutorials/master?filepath=tutorials/notebooks
 
 
+Acknowledgement
+---------------
+
 This repo makes use of the astropy-tutorials repo as the template.
 
+
 Contributing tutorial material
 ------------------------------