Add guide on single sign on

content/guides.json

@@ -1,4 +1,14 @@
 [
+  {
+    "title": "SSO — Single Sign On",
+    "description": "Learn the basics of SAML and understand how does Single Sign On work.",
+    "url": "/guides/sso",
+    "fileName": "sso",
+    "featured": true,
+    "author": "kamranahmedse",
+    "updatedAt": "2020-07-01T19:59:14.191Z",
+    "createdAt": "2020-07-01T19:59:14.191Z"
+  },
   {
     "title": "OAuth — Open Authorization",
     "description": "Learn and understand what is OAuth and how it works",

content/guides/sso.md

@@ -0,0 +1,3 @@
+[![](/guides/sso.png)](/guides/sso.png)
+
+Here is the [original tweet](https://twitter.com/kamranahmedse/status/1280266408434302979) where this image was posted.

content/roadmaps.json

@@ -43,7 +43,7 @@
       "2018",
       "2017"
     ],
-    "contributorsCount": 2,
+    "contributorsCount": 3,
     "contributorsUrl": "/frontend/contributors",
     "url": "/frontend",
     "sidebar": {}

public/sitemap.xml

@@ -39,7 +39,7 @@
 <url>
               <loc>https://roadmap.sh/guides/oauth</loc>
               <changefreq>monthly</changefreq>
-              <lastmod>2020-06-28T19:59:14.191Z</lastmod>
+              <lastmod>2020-07-01T19:59:14.191Z</lastmod>
               <priority>1.0</priority>
           </url>
 <url>
@@ -195,7 +195,7 @@
 <url>
               <loc>https://roadmap.sh/roadmaps</loc>
               <changefreq>monthly</changefreq>
-              <lastmod>2020-07-17T11:05:11.942Z</lastmod>
+              <lastmod>2020-07-17T11:14:28.608Z</lastmod>
               <priority>1.0</priority>
           </url>
 <url>
@@ -213,7 +213,7 @@
 <url>
               <loc>https://roadmap.sh/watch</loc>
               <changefreq>monthly</changefreq>
-              <lastmod>2020-07-17T11:04:35.389Z</lastmod>
+              <lastmod>2020-07-17T11:14:28.608Z</lastmod>
               <priority>1.0</priority>
           </url>
 </urlset>