JAL-3026 update README with instructions on setting up Eclipse for java2script and...

diff --git a/README b/README
index eaf226b..c183126 100755 (executable)
--- a/README
+++ b/README
@@ -16,6 +16,27 @@ You may also be able to use Borland JBuilder to build Jalview. A JBuilder projec
 but the library dependencies are almost certainly out of date. See the build.xml 
 for current dependencies.
 
 but the library dependencies are almost certainly out of date. See the build.xml 
 for current dependencies.
 

+##
+
+Jalview-JS
+
+To enable transpilation of Jalview's code:
+
+1. Locate the 'dropin' directory in your eclipse installation and copy swingjs/net.sf.j2s.core.jar to it.
+2. Restart Eclipse
+3. If all is well you should see the 'Java2Script' builder is listed as the primary builder for the Jalview project.
+  if not, this is because your properties file needs to have the standard java builder replaced with the following:
+  <name>net.sf.j2s.core.java2scriptbuilder</name>
+
+- otherwise Javascript files will now be generated in the site/swingjs/j2s directory whenever a build occurs
+4. Execute the 'unzip-to-site' task (if it isn't automatically run) to update the site directory with the latest versions of SwingJS, varna-js, JSmol and other dependencies required by Jalview.
+
+
+  
+
+
+##
+

 For more help, read the file doc/building.html
 
 
 For more help, read the file doc/building.html