merge: First tutorial + Example (#804)

## Changes:

- /docs is now a Getting Started page with the first tutorial
- basic-example added

examples/basic-example/content/my-dataset/README.md

@@ -0,0 +1,11 @@
+# Data
+
+This is the README.md this project.
+
+## Table 
+
+<Table url="data_1.csv" />
+ 
+## Vega Lite Line Chart from URL 
+
+<VegaLite spec={ { "$schema": "https://vega.github.io/schema/vega-lite/v5.json", "data": {"url": "data_2.csv"}, "width": 550, "height": 250, "mark": "line", "encoding": { "x": {"field": "Time", "type": "temporal"}, "y": {"field": "Anomaly (deg C)", "type": "quantitative"}, "tooltip": {"field": "Anomaly (deg C)", "type": "quantitative"} } } } />