Update ripple-lib tests to use mocha

test/testutils.js

@@ -0,0 +1,18 @@
+
+exports.get_config = get_config;
+
+function get_config() {
+  var config = { };
+  try {
+    config = require('./config');
+  } catch(exception) {
+    config = require('./config-example');
+  }
+  return load_config(config);
+}
+
+exports.load_config = load_config;
+
+function load_config(config) {
+  return( require('../src/js/ripple/config')).load(config);
+}