Update documentation for sbt 1

Author: allanrenucci

docs/_includes/getting-started.html

@@ -15,7 +15,7 @@ <h1 id="getting-started">Try Dotty</h1>
         <p>Or, you can try Dotty in your browser with <a href="https://scastie.scala-lang.org/?target=dotty">Scastie</a>.</p>
 
         <h1 id="getting-started-with-a-project">Create a Dotty Project</h1>
-        <p>The fastest way to create a new project in Dotty is using <a href="http://www.scala-sbt.org/">sbt (0.13.15+)</a>.</p>
+        <p>The fastest way to create a new project in Dotty is using <a href="http://www.scala-sbt.org/">sbt (1.1.4+)</a>.</p>
 
         <p>Create a Dotty project:</p>
         <pre class="sourceCode bright"><code>sbt new <a href="https://github.com/lampepfl/dotty.g8">lampepfl/dotty.g8</a></code></pre>

docs/docs/usage/getting-started.md

@@ -12,7 +12,7 @@ title: Getting Started: Users
 This is an easy way to try Dotty without installing anything, directly in your browser.
 
 ### sbt
-The fastest way to create a new project compiled by Dotty is using [sbt (0.13.13+)](http://www.scala-sbt.org/)
+The fastest way to create a new project compiled by Dotty is using [sbt (1.1.4+)](http://www.scala-sbt.org/)
 
 Create a simple Dotty project:
 ```bash

docs/docs/usage/sbt-projects.md

@@ -3,4 +3,4 @@ layout: doc-page
 title: "Using Dotty with sbt"
 ---
 
-To try it in your project see the [Getting Started User Guide](http://dotty.epfl.ch/#getting-started).
+To try it in your project see the [Getting Started User Guide](https://dotty.epfl.ch/docs/usage/getting-started.html).