Don't show sign up if they're signed in.

frontend/client/components/Home/Intro.less

@@ -38,7 +38,7 @@
       display: flex;
       align-items: center;
 
-      &-auth {
+      &-main {
         display: flex;
         align-items: center;
         justify-content: center;

frontend/client/components/Home/Intro.tsx

@@ -1,18 +1,32 @@
 import React from 'react';
+import { connect } from 'react-redux';
 import { Link } from 'react-router-dom';
 import { withNamespaces, WithNamespaces } from 'react-i18next';
 import HomeIllustration from 'static/images/home-illustration.png';
+import { AppState } from 'store/reducers';
 import './Intro.less';
 
-const HomeIntro: React.SFC<WithNamespaces> = ({ t }) => (
+interface StateProps {
+  authUser: AppState['auth']['user'];
+}
+
+type Props = StateProps & WithNamespaces;
+
+const HomeIntro: React.SFC<Props> = ({ t, authUser }) => (
   <div className="HomeIntro">
     <div className="HomeIntro-content">
       <h1 className="HomeIntro-content-title">{t('home.intro.title')}</h1>
       <p className="HomeIntro-content-subtitle">{t('home.intro.subtitle')}</p>
       <div className="HomeIntro-content-buttons">
-        <Link className="HomeIntro-content-buttons-auth" to="/auth">
-          {t('home.intro.signup')}
-        </Link>
+        {authUser ? (
+          <Link className="HomeIntro-content-buttons-main" to="/proposals">
+            {t('home.intro.browse')}
+          </Link>
+        ) : (
+          <Link className="HomeIntro-content-buttons-main" to="/auth">
+            {t('home.intro.signup')}
+          </Link>
+        )}
         <a className="HomeIntro-content-buttons-learn" href="#home-guide">
           {t('home.intro.learn')}
         </a>
@@ -24,4 +38,6 @@ const HomeIntro: React.SFC<WithNamespaces> = ({ t }) => (
   </div>
 );
 
-export default withNamespaces()(HomeIntro);
+export default connect<StateProps, {}, {}, AppState>(
+  state => ({ authUser: state.auth.user }),
+)(withNamespaces()(HomeIntro));