Merge branch 'docs-update-1' into 'main'

Update docs

See merge request chartwerk/core!24

README.md

@@ -3,26 +3,59 @@
 
 # Chartwerk Core
 
-Repo contains the core code of chartwerk project: abstrac classes and rendreing of grid together with crosshair! :)
+Repo contains the core code of chartwerk project: abstract classes, rendering system, basic components.
 See ChartwerkPod to see what is parent for all chartwerk pods and get involved into development.
+Everything can be overwritted.
 
-## Plugin renders:
-- SVG container with:
-  - Axes, with ticks and labels.
-  - Grid, which scales using specified time interval.
-  - Legend, which can hide metrics.
+## Plugin contains:
+- SVG container.
+- Series and Options models with defaults.
+- State model to control charts changes.
+- Overlay container to handle all events.
+- Zoom events controller.
+- Axes, with ticks and labels.
+- Grid, with separate behavior from axis.
+- Legend, which can hide metrics.
+- Crosshair.
+
+
+## Declare
+```js
+const pod = new ChartwerkPod(
+  document.getElementById('chart-div'),
+  series,
+  options,
+);
+pod.render();
+```
+
+## Series
+
+Series is a list of metrics with datapoints and specific config working for each serie.
+series = Serie[]
+
+- `datapoints` - metric data for rendering.
+```js
+datapoints = [number, number][]; // 0 index for X, 1 index for Y 
+```
+
+- `target` - id of metric. Required param, should be unique.
+```js
+target: string;
+```
 
 ## Options:
 
-Options are not mandatory:
+Options is a config working for whole chart and metrics.
+All options are optional.
 
 - `margin` — chart container positioning;
 ```js
-margin={
+margin = {
   top: number,
   right: number,
   bottom: number,
-  left: number
+  left: number,
 }
 ```