restored readme files

Author: NansiYancheva

chart/print-chart-only/readme.md

@@ -0,0 +1,7 @@
+# Printing Charts
+
+This sample project was obsoleted and removed.
+
+Please refer to KB article [Print Chart Only](https://docs.telerik.com/blazor-ui/knowledge-base/chart-print-chart-only).
+
+If you prefer, you can [browse the removed project in an older version of this repository](https://github.com/telerik/blazor-ui/tree/c8b8bb91835da71824abcf962cffbfff851d932d/chart/print-chart-only).

chart/responsive-chart/readme.md

@@ -0,0 +1,7 @@
+# Responsive Chart
+
+This sample project was obsoleted and removed.
+
+Please refer to KB article [Responsive Chart](https://docs.telerik.com/blazor-ui/knowledge-base/chart-responsive).
+
+If you prefer, you can [browse the removed project in an older version of this repository](https://github.com/telerik/blazor-ui/tree/c8b8bb91835da71824abcf962cffbfff851d932d/chart/responsive-chart).