Fix(nav): Change sign in to sign up

common/app/components/Nav/Nav.jsx

@@ -191,10 +191,10 @@ export default class extends React.Component {
       return (
         <NavItem
           eventKey={ 2 }
-          href='/signin'
-          key='signin'
+          href='/signup'
+          key='signup'
           >
-          Sign In
+          Sign Up
         </NavItem>
       );
     }

server/views/account/email-signup.jade

@@ -15,3 +15,7 @@ block content
                   button.btn.btn-lg.btn-primary.btn-block(type='submit')
                     span.ion-person-add
                     | Signup
+    .row
+        .col-sm-6.col-sm-offset-3
+            p.text-center
+                a(href="/signin") Click here if you already have an account and want to sign in.

server/views/home.jade

@@ -25,7 +25,7 @@ block content
         .big-break
         .row
             .col-xs-12.col-sm-8.col-sm-offset-2
-                a.btn.btn-cta.signup-btn.btn-block(href="/signin") Start coding (it's free)
+                a.btn.btn-cta.signup-btn.btn-block(href="/signup") Start coding (it's free)
         .spacer
         h2 As featured in:
         img.img-center.img-responsive(src='https://s3.amazonaws.com/freecodecamp/as-seen-on.png')
@@ -111,6 +111,6 @@ block content
         .big-break
         .row
             .col-xs-12.col-sm-8.col-sm-offset-2
-                a.btn.btn-cta.signup-btn.btn-block(href="/signin") Start coding (it's free)
+                a.btn.btn-cta.signup-btn.btn-block(href="/signup") Start coding (it's free)
         script.
             challengeName = 'Home'

server/views/partials/navbar.jade

@@ -21,7 +21,7 @@ nav.navbar.navbar-default.navbar-fixed-top.nav-height
                 a(href='/shop') Shop
             if !user
                 li
-                    a(href='/signin') Sign in
+                    a(href='/signup') Sign Up
             else
                 li.brownie-points-nav
                     a(href='/settings') [ #{user.points} ]