Update README

README.md

@@ -32,7 +32,7 @@ To get development branch from source control: https://geti2p.net/newdevelopers
   http://www.gnu.org/software/gettext/
 - Build environment must use a UTF-8 locale.
 
-### Build process
+### Ant build process
 
 On x86 systems do:
 
@@ -46,6 +46,20 @@ On non-x86, use one of the following instead:
 
 Run 'ant' with no arguments to see other build options.
 
+### Gradle build process
+
+Full builds of installers or updates are not yet possible, but the code can be
+compiled with:
+
+    ./gradlew assemble
+
+This will download dependencies over the clearnet by default, including Gradle
+itself. To download through a SOCKS proxy (e.g. Tor), add the following lines to
+your `~/.gradle/gradle.properties`:
+
+    systemProp.socksProxyHost=localhost
+    systemProp.socksProxyPort=9150
+
 ## Contact info
 
 Need help? See the IRC channel #i2p on irc.freenode.net