add documentation to Model API

demos/README.md

@@ -276,35 +276,7 @@ cmake -A x64 <open_model_zoo>/demos
 
 ### <a name="model_api_installation"></a>Python\* model API installation
 
-Python Model API with model wrappers and pipelines can be installed as a part of OpenVINO&trade; toolkit or from source.
-Installation from source is as follows:
-
-1. Install Python (version 3.6 or higher), [setuptools](https://pypi.org/project/setuptools/):
-
-2. Build the wheel with the following command:
-
-```sh
-python <omz_dir>/demos/common/python/setup.py bdist_wheel
-```
-The built wheel should appear in the dist folder;
-Name example: `openmodelzoo_modelapi-0.0.0-py3-none-any.whl`
-
-3. Install the package in the clean environment with `--force-reinstall` key:
-```sh
-python -m pip install openmodelzoo_modelapi-0.0.0-py3-none-any.whl --force-reinstall
-```
-Alternatively, instead of building the wheel you can use the following command inside  `<omz_dir>/demos/common/python/` directory to build and install the package:
-```sh
-python -m pip install .
-```
-
-When the model API package is installed, you can import it as follows:
-```sh
-python -c "from openvino.model_zoo import model_api"
-```
-
-> **NOTE**: On Linux and macOS, you may need to type `python3` instead of `python`. You may also need to [install pip](https://pip.pypa.io/en/stable/installation/).
-> For example, on Ubuntu execute the following command to get pip installed: `sudo apt install python3-pip`.
+To run Python demo applications, you need to install the Python Model API package. Refer to [Python Model API documentation](common/python/openvino/model_zoo/model_api/README.md#building-python*-model-api-package) to learn about its installation.
 
 ### <a name="build_python_extensions"></a>Build the Native Python\* Extension Modules
 

demos/common/python/requirements_openvino.txt

@@ -0,0 +1 @@
+openvino-dev