Add new volunteer Yakumwamba

data/users/Saran-pariyar.json

@@ -4,7 +4,7 @@
   "image": "https://avatars.githubusercontent.com/u/86418083",
   "categories": [
     {
-      "slug": "web-development",
+      "slug": "ç",
       "topics": ["react","CSS", "javascript"]
     }
   ],

data/users/codewithyaku.json

@@ -0,0 +1,27 @@
+{
+    "name": "Yaku",
+    "bio": "Full-Stack developer",
+    "image": "https://avatars.githubusercontent.com/u/72974932?v=4",
+    "categories": [
+        {
+            "slug": "programming",
+            "topics": ["javascript","blockhain"]
+        },
+        {
+            "slug": "mobile-development",
+            "topics": ["android","java","kotlin"]
+        },
+        {
+            "slug": "web-development",
+            "topics": ["javascript","CSS"]
+        },
+        {
+            "slug": "software-development",
+            "topics": ["Python","Go"]
+        }
+
+    ],
+    "contacts": {
+        "twitter": "codewithYaku"
+    }
+}

public/categories.json

@@ -18,5 +18,9 @@
   {
     "name": "Data Science",
     "slug": "data-science"
+  },
+  {
+    "name": "Blockchain Development",
+    "slug": "blockchain"
   }
 ]