diff --git a/Gemfile.lock b/Gemfile.lock
index aab0952..617ab06 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,7 +8,9 @@ GEM
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
+    ffi (1.15.3)
     ffi (1.15.3-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
@@ -62,6 +64,8 @@ GEM
     rexml (3.2.5)
     rouge (3.26.0)
     safe_yaml (1.0.5)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
     terminal-table (2.0.0)
@@ -75,6 +79,7 @@ GEM
     webrick (1.7.0)
 
 PLATFORMS
+  x64-mingw-ucrt
   x64-mingw32
 
 DEPENDENCIES
diff --git a/assets/img/logo/pcfc.jpg b/assets/img/logo/pcfc.jpg
new file mode 100644
index 0000000..4c407c0
Binary files /dev/null and b/assets/img/logo/pcfc.jpg differ