fix: signin/up when login for first time (#60)

Author: jfcampos1

src/screens/SignIn/index.js

@@ -46,7 +46,7 @@ class SignInScreen extends React.Component {
   }
 
   render() {
-    if (getObject(USER_DATA).token != null) {
+    if (getObject(USER_DATA) && getObject(USER_DATA).token != null) {
       return <Redirect to={routes.requestTrip} />
     }
     const { loading } = this.state

src/screens/SignUp/index.js

@@ -46,7 +46,7 @@ class SignUpScreen extends Component {
 
   render() {
     const { loading } = this.state
-    if (getObject(USER_DATA).token != null) {
+    if (getObject(USER_DATA) && getObject(USER_DATA).token != null) {
       return <Redirect to={routes.requestTrip} />
     }
     return (

src/screens/SignUp/style.sass

@@ -0,0 +1,2 @@
+.sign-up
+  margin-bottom: 100px