Update Singlestat Docs

Need some additional clarification in Spark Line and Value to text before this is merged.

docs/sources/reference/singlestat.md

@@ -11,5 +11,49 @@ page_keywords: grafana, singlestat, panel, documentation
 The singlestat panel allows you to show the one main summery stat of a single series (like max, min, avg, sum). It also
 The singlestat panel allows you to show the one main summery stat of a single series (like max, min, avg, sum). It also
 provides thresholds to color that singlestat metric or the panel background.
 provides thresholds to color that singlestat metric or the panel background.
 
 
-## Options
-- TODO
+### Big Value Configuration
+
+The big value configuration allows you to both customize the look of your singlestat metric, as well as add additional labels to contexualize the metric.  
+
+![](/img/v1/Singlestat-BaseSettings.png)
+
+1. `Big Value`: Big Value refers to the collection of values displayed in the singlestat panel. 
+2. `Prefixes`: The Prefix fields let you define a custom label and font-size (as a %) to appear *before* the singlestat metric. 
+3. `Values`: The Value fields let you set the (min, max, average, current, total) and font-size (as a %) of the singlestat metric. 
+4. `Potsfixes`: The Postfix fields let you define a custom label and font-size (as a %) to appear *after* the singlestat metric. 
+5. `Units`: Units are appended to the the singlestat metric within the panel, and will respect the color and threshold settings for the Value.   
+6. `Decimals`: The Decimal field allows you to override automatic decimal precision, inceasing the digits displayed for your singlestat metric. 
+
+### Coloring
+
+The coloring options of the singlestat config allow you to dynamically change the colors based on the displayed data. 
+
+![](/img/v1/Singlestat-Coloring.png)
+
+1. `Background`: The Background checkbox applies the configured thresholds and colors to the entirity of the singlestat panel background. 
+2. `Value`: The Value checkbox applies the configured thresholds and colors to the value within the singlestat panel.
+3. `Thresholds`: Thresholds allow you to change the background and value colors dyanmically within the panel. The threshold field accepts **3 comma-separated** values, corresponding to the three colors directly to the right.
+4. `Colors`: The color picker allows you to select a color and opacity 
+5. `Invert order`: This link toggles the threshold color order.</br>For example: Green, Orange, Red (<img src="/images/GYR.png">) will become Red, Orange, Green (<img src="/images/RYG.png">).
+
+
+### Spark Lines
+
+Spark lines are a great way of seeing the historical data associated with a single stat value, providing valuable context at a glance. Spark lines act differently than traditional graph panels and do not include x or y axis, coordinates, a legend, or ability to interact with the graph. 
+
+![](/img/v1/Singlestat-Sparklines.png)
+
+1. `Show`: The show checkbox will toggle whether the spark line is shown in the panel. When unselected, only the value will appear.
+2. `Background`: **ASK TORKEL.**
+3. `Line Color`: This color selection applies to the color of the sparkline itself.
+4. `Fill Color`: This color selection applies to the area below the sparkline.</br></br> ***Pro-tip:*** Reduce the opacity on  fill colors for nice looking panels.  
+
+
+### Value to text mapping
+
+Value to text mapping allows you to translate values into explcit text. The text will respect all styling, thresholds and customization defined for the value. 
+
+![](/img/v1/Singlestat-ValueMapping.png)
+
+***Does this support regexes or anything other than a single value?***
+