Scala interpreter instructions (#14169)

docs/install/scala_setup.md

@@ -20,6 +20,7 @@
 The following instructions are provided for macOS and Ubuntu. Windows is not yet available.
 
 **Note:** If you use IntelliJ or a similar IDE, you may want to follow the [MXNet-Scala on IntelliJ tutorial](../tutorials/scala/mxnet_scala_on_intellij.html) instead of these instructions.
+**Note:** Currently, we only support scala 2.11
 
 <hr>
 
@@ -114,6 +115,33 @@ mvn install
 
 <hr>
 
+## Interpreter
+
+To run the scala interpreter, first download and install scala 2.11.x (run `scala -version` to make sure you have the right version installed.**
+
+### Installing the Interpreter
+
+**Ubuntu***
+
+```
+sudo apt-get install scala
+```
+
+**macOS***
+
+```
+brew install [email protected]
+```
+
+Then, add scala to your path by following the instructions output by homebrew.
+
+### Running the Interpreter
+
+To run the interpreter, download the appropriate mxnet jar from [the maven repository](https://search.maven.org/search?q=g:org.apache.mxnet) or build from source following the instructions above.
+
+Then, run `scala -cp {path/to/mxnet-full_2.11-os-version.jar}` to start it.
+If you receive a "NumberFormatException" when running the interpreter, run `export TERM=xterm-color` before starting the interpreter.
+
 ## Documentation
 
 Scaladocs are generated as part of the docs build pipeline. You can find them published in the [Scala API](http://mxnet.incubator.apache.org/api/scala/index.html) section of the website or by going to the [scaladocs output](https://mxnet.incubator.apache.org/api/scala/docs/index.html#org.apache.mxnet.package) directly.

docs/tutorials/scala/char_lstm.md

@@ -71,11 +71,7 @@ In this tutorial, you will accomplish the following:
 
 ## Prerequisites
 
-To complete this tutorial, you need:
-
-- MXNet. See the instructions for your operating system in [Setup and Installation](http://mxnet.io/install/index.html)
-- [Scala 2.11.8](https://www.scala-lang.org/download/2.11.8.html)
-- [Maven 3](https://maven.apache.org/install.html)
+To complete this tutorial, setup and run the scala interpreter by following the [instructions](https://mxnet.incubator.apache.org/install/scala_setup.html#interpreter).
 
 ## Download the Data