Advertise support for Scala in Codehilite

docs/extensions/codehilite.md

@@ -915,6 +915,27 @@ module Finity
 end
 ```
 
+### Scala
+
+```scala
+// Every record of this DataFrame contains the label and
+// features represented by a vector.
+val df = sqlContext.createDataFrame(data).toDF("label", "features")
+
+// Set parameters for the algorithm.
+// Here, we limit the number of iterations to 10.
+val lr = new LogisticRegression().setMaxIter(10)
+
+// Fit the model to the data.
+val model = lr.fit(df)
+
+// Inspect the model: get the feature weights.
+val weights = model.weights
+
+// Given a dataset, predict each point's label, and show the results.
+model.transform(df).show()g
+```
+
 ### XML
 
 ``` xml