Doc-example (#18)

* reactive traffic example

* structure

* structure

* waymo example

* rename and add doc

* finish example

* example

* start from 2

documentation/install.rst

@@ -0,0 +1,38 @@
+.. _install:
+
+########################
+Installation
+########################
+
+The ScenarioNet repo contains tools for converting scenarios and building database from various data sources.
+The simulation part is maintained in `MetaDrive <https://github.com/metadriverse/metadrive>`_ repo, and let's install MetaDrive first.
+
+**1. Install MetaDrive**
+
+The installation of MetaDrive on different platforms is straightforward and easy!
+We recommend to use the following command to install::
+
+    # Install MetaDrive Simulator
+    git clone git@github.com:metadriverse/metadrive.git
+    cd metadrive
+    pip install -e.
+
+It can also be installed from PyPI by::
+
+ pip install "metadrive-simulator>=0.4.1.1"
+
+To check whether MetaDrive is successfully installed, please run::
+
+    python -m metadrive.examples.profile_metadrive
+
+.. note:: Please do not run the above command in the folder that has a sub-folder called :code:`./metadrive`.
+
+**2. Install ScenarioNet**
+
+For ScenarioNet, we only provide Github installation::
+
+    # Install ScenarioNet
+    git clone git@github.com:metadriverse/scenarionet.git
+    cd scenarionet
+    pip install -e .
+