simple readme for the source pkg

README.txt

+Prerequisites to build from source:
+	Java SDK (preferably Sun) 1.5.0 or higher (1.6 recommended)
+	Apache Ant 1.7.0 or higher
+
+To build:
+	ant pkg
+	Run 'ant' with no arguments to see other build options.
+	See http://www.i2p2.de/download.html for installation instructions.
+
+Documentation:
+	http://www.i2p2.de/
+	API: run 'ant javadoc' then start at build/javadoc/index.html
+
+Latest release:
+	http://www.i2p2.de/download.html
+
+To get development branch from source control:
+	http://www.i2p2.de/newdevelopers.html
+
+FAQ:
+	http://www.i2p2.de/faq.html
+
+Need help?
+	IRC irc.freenode.net #i2p
+	http://forum.i2p2.de/
+
+Licenses:
+	http://www.i2p2.de/licenses.html
+	Also http://localhost:7657/help.jsp
+	Also see licenses for the individual bundled apps in apps/*
+