JAL-3248 Essential tl;dr :)

diff --git a/doc/building.md b/doc/building.md
index b5d8114..ae76ced 100644 (file)
--- a/doc/building.md
+++ b/doc/building.md
@@ -1,5 +1,19 @@
 # Building Jalview from Source
 
+## tl;dr
+
+```
+# download
+git clone http://source.jalview.org/git/jalview.git
+#compile
+cd jalview
+gradle getdown
+# run
+cd getdown/files/11
+java -jar gradle-launcher.jar . jalview
+```
+
+
 ## What you will need
 
 The method here is described in terms of using a command line.  You can easily do this on linux or in a Terminal window in macOS.  You can do it in Windows.
@@ -93,4 +107,4 @@ in `j8lib` for Java 1.8 runtime and `j11lib` for Java 11 runtime.
 
 
 
-and then you can build the Jalview jar file using gradle.
\ No newline at end of file
+and then you can build the Jalview jar file using gradle.