added gemfile inxed.md and fixed typo

docs/Gemfile

@@ -0,0 +1,4 @@
+source "https://rubygems.org"
+
+# The github-pages gem pins all compatible versions of Jekyll and its plugins
+gem "github-pages", group: :jekyll_plugins

docs/index.md

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+---
+layout: home
+title: "Welcome"
+---
+
+# 👋 Hey there
+
+Welcome to my build logs, notes, and experiments.
+
+You can read my latest posts below — or check out the [About](/about) page.