Update docs/README.md file.

Author: ASmirnov-HORIS

docs/README.md

@@ -1,94 +1,7 @@
->
->
->
-> # Warning: 
->   This documentation page is outdated.
-> 
->   For up-to-date information, see the [Lets-Plot for Kotlin](https://lets-plot.org/kotlin) documentation website.
-> 
-> 
->
-
-
 ## Lets-Plot Kotlin API 
      
-* Lets-Plot Kotlin API reference: https://lets-plot.org/kotlin
+* Lets-Plot Kotlin API reference: https://lets-plot.org/kotlin/api-reference/
 
 * The "Example Notebooks" reference: [kotlin_examples/](https://nbviewer.org/github/JetBrains/lets-plot-docs/tree/master/source/kotlin_examples/)
 
-* Example notebooks in the Binder: [mybinder.org](https://mybinder.org/v2/gh/JetBrains/lets-plot-kotlin/HEAD?labpath=docs%2Fexamples%2Fjupyter-notebooks)
-
-
-<a id="toc"></a>
-### Table of Contents
-
-- [Tooltip Customization](#tooltip-customization)
-- [Formatting](#formatting)
-- [Data Sampling](#sampling)
-- [Saving Plot in a File](#export)
-- [GeoTools Support](#geotools)
-
-
-<a id="tooltip-customization"></a>
-### Tooltip Customization
-
-You can customize the content, values formatting and appearance of tooltip for any geometry layer in your plot.
-
-Learn more: [Tooltip Customization](https://lets-plot.org/kotlin/tooltips.html).
-
-<a id="formatting"></a>
-### Formatting
-
-Formatting of numeric and date-time values in tooltips, legends, on the axes and *text geometry* layer.
-
-Learn more: [Formatting](https://lets-plot.org/kotlin/formats.html).
-
-<a id="sampling"></a>
-### Data Sampling
-
-Sampling is a special technique of data transformation, which helps to deal with large datasets and overplotting.
-
-Learn more: [Data Sampling](https://lets-plot.org/kotlin/sampling.html).
-
-<a id="export"></a>
-### Saving Plot in a File
-
-The `ggsave()` function is a convenient way of saving a plot or a GGBunch object in a file.
-
-The supported export formats are: `SVG, HTML, PNG, JPEG and TIFF`.
-
-For example, the code below will save plot as a PNG image in the file `<user dir>//lets-plot-images/density.png`:
-
-```kotlin
-val rand = java.util.Random(123)
-val n = 400
-val data = mapOf (
-    "rating" to List(n/2) { rand.nextGaussian() } + List(n/2) { rand.nextGaussian() * 1.5 + 1.5 },
-    "cond" to List(n/2) { "A" } + List(n/2) { "B" }
-)
-
-var p = letsPlot(data) +
-        geomDensity { x = "rating"; color = "cond" } + ggsize(500, 250)
-        
-ggsave(p, "density.png")        
-``` 
-
-<img src="https://raw.githubusercontent.com/JetBrains/lets-plot-kotlin/master/docs/examples/images/ggsave_demo.png" alt="Couldn't load ggsave_demo.png" width="500" height="250"/>
-
-See `ggsave()` [documentation](https://lets-plot.org/kotlin/api-reference/-lets--plot--kotlin/org.jetbrains.letsPlot.export/ggsave.html)
-for more information about the function arguments and default values.
-        
-Example notebook: [ggsave demo](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/export_to_file.ipynb).
-
-<a id="geotools"></a>
-### GeoTools support
-
-<img src="https://raw.githubusercontent.com/JetBrains/lets-plot-kotlin/master/docs/images/geotools_thumb.png" alt="geotools_thumb.png" width="74" height="123"/>
-
-[GeoTools](https://www.geotools.org/) is an open source Java GIS Toolkit.
-
-Lets-Plot supports visualization of a set of `SimpleFeature`-s stored in `SimpleFeatureCollection`, as well as
-individual `Geometry` and `ReferencedEnvelope` objects.
-
-Learn more: [Geospatial Charts](https://lets-plot.org/kotlin/geospatial-charts.html).
-
+* Example notebooks in the Binder: [mybinder.org](https://mybinder.org/v2/gh/JetBrains/lets-plot-kotlin/HEAD?labpath=docs%2Fexamples%2Fjupyter-notebooks)