Add basic UI

This includes the login form, registration, and a simple nav bar when
you're logged in. I'm just sort of figuring all this stuff out

lib/store/root.js

@@ -0,0 +1,14 @@
+import { combineReducers }        from 'redux';
+import createStoreWithMiddleware  from 'vanth/middleware';
+
+import SessionReducer             from 'vanth/store/session';
+import URLReducer                 from 'vanth/store/url';
+
+const root = combineReducers({
+  session : SessionReducer,
+  url     : URLReducer,
+});
+
+const store = createStoreWithMiddleware(root);
+
+module.exports = store;

lib/store/session.js

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+import _ from 'lodash';
+import * as Constants from 'vanth/constants';
+
+const emptyState = {
+  name      : null,
+  username  : null,
+  uri       : null,
+};
+
+var reducer = function(state = emptyState, action) {
+  switch (action.type) {
+    case Constants.ActionType.SESSION_GET_COMPLETE:
+      return _.assign({}, state, action.data);
+    default:
+      return state;
+  }
+}
+
+module.exports = reducer;

lib/store/url.js

@@ -0,0 +1,34 @@
+import urllite        from 'urllite';
+
+import { ActionType } from 'vanth/constants';
+
+let _parseSearch = function(location) {
+  let search = {};
+  let query = location.search.substring(1);
+  let vars = query.split('&');
+  for(var i = 0; i < vars.length; i++) {
+    var pair = vars[i].split('=');
+    search[pair[0]] = decodeURIComponent(pair[1]);
+  }
+  return search;
+}
+
+const initialState = {
+  location  : urllite(window.location),
+  search    : _parseSearch(urllite(window.location)),
+};
+
+var reducer = function(state = initialState, action) {
+  switch (action.type) {
+    case ActionType.URL_CHANGE:
+      let location = urllite(action.data.newURL);
+      return _.assign({}, state, {
+        location: location,
+        search: _parseSearch(location)
+      });
+    default:
+      return state;
+  }
+}
+
+module.exports = reducer;