improved README.MD

Author: galij899

README.MD

@@ -1 +1,41 @@
-django-json-model-widget
+## django-json-model-widget
+
+Django widget for storing model instances pairs in flat JsonField.
+
+### Install stable version from PyPI
+
+Install from PyPI:
+
+```
+pip install django-flat-json-widget
+```
+
+### Usage
+
+Add flat_json_widget to INSTALLED_APPS:
+
+```python
+INSTALLED_APPS = [
+    # other apps...
+    'json_model_widget',
+]
+```
+
+Then load the widget where you need it, for example, here's how to use it in the django admin site:
+
+```python
+from django import forms
+from json_model_widget.widgets import JsonPairInputs
+from .models import model1, model2
+
+
+class MyForm(forms.ModelForm):
+    class Meta:
+        widgets = {
+            'fieldname': JsonPairInputs(model1, model2)
+        }
+```
+
+### Contributors
+
+Oleg Galichkin <galij899@yandex.ru>