Update the readme (#1682)

.github/settings.yml

@@ -7,7 +7,7 @@ repository:
   homepage: https://enso.org
   topics:
     enso, visual, textual, hybrid, functional, language, compiler, interpreter,
-    rts, jit, polyglot
+    graalvm, rts, jit, polyglot
 
   private: false
 

README.md

@@ -38,7 +38,13 @@ services, all in a single language. Watch the following introduction video to
 learn what Enso is, and how it helps companies build data workflows in minutes
 instead of weeks.
 
-[![Introducing Enso video](https://img.youtube.com/vi/fQvWMoOjmQk/0.jpg)](https://www.youtube.com/watch?v=fQvWMoOjmQk)
+<br/>
+
+<a href="https://www.youtube.com/watch?v=fQvWMoOjmQk" rel="nofollow">
+<img width="692" alt="Screenshot 2021-04-15 at 12 16 32" src="https://user-images.githubusercontent.com/1623053/114854125-c8173300-9de4-11eb-9b10-99a331eb2251.png">
+</a>
+
+<br/>
 
 <br/>
 
@@ -84,15 +90,17 @@ always trust the results you get.
 <ul><ul>
     <b>Mix languages with close-to-zero interop overhead.</b><br/>
     Import any library from Enso, Java, JavaScript, R, or Python, and use
-    functions, callbacks, and data types without any wrappers. Enso compiles
-    them to the same instruction set with a unified memory model.
+    functions, callbacks, and data types without any wrappers. Enso uses
+    <a href="https://www.graalvm.org">GraalVM</a> to compile them to the same
+    instruction set with a unified memory model.
   <br/><a href="https://enso.org">Learn more →<a/>
 </ul></ul>
 
 <img align="left" width="44px" src="https://raw.githubusercontent.com/enso-org/icons/master/blue/with-bg/it/startup-and-new-business/051-rocket.svg">
 <ul><ul>
     <b>Fast. Up to 80x faster than Python.</b><br/>
-    It can even run other languages faster than their official runtimes. Enso-R
+    It can even run other languages faster than their official runtimes.
+    <a href="https://github.com/oracle/fastr">Enso-R (using FastR on the GraalVM)</a>
     is 36x faster than GNU-R.
   <br/><a href="https://github.com/enso-org/benchmarks">See benchmarks →<a/>
 </ul></ul>
@@ -187,8 +195,10 @@ open and free to use. Join us, help us to build it, and spread the word!
 Enso consists of several sub projects:
 
 - **Enso Engine:** The Enso Engine is the set of tools that implement the Enso
-  language and its associated services. These include a just-in-time compiler,
-  runtime, and language server. These components can be used on their own as
+  language and its associated services. These include the Enso interpreter, a
+  just-in-time compiler and runtime (both powered by
+  [GraalVM](https://www.graalvm.org)), and a language server that lets you
+  inspect Enso code as it runs. These components can be used on their own as
   command line tools.
 
 - **Enso IDE:** The [Enso IDE](https://github.com/enso-org/ide) is the desktop