Add base project files.

core/build.gradle

@@ -0,0 +1,6 @@
+apply plugin: "java"
+
+sourceCompatibility = 1.7
+[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
+
+sourceSets.main.java.srcDirs = [ "src/" ]

core/src/Asteroids.gwt.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit trunk//EN" "http://www.gwtproject.org/doctype/2.8.0/gwt-module.dtd">
+<module>
+	<source path="com/me/asteroids" />
+</module>