Update .gitignore

Recreated project from scratch with latest version of Jekyll, as was in version obsolescence hell. Seems all g now for local dev. Don’t even know what’s different, but old version borked, this one worked.

.gitignore

@@ -1,4 +1,5 @@
 _site
 .sass-cache
+.jekyll-metadata
 Gemfile
 Gemfile*

_config.yml

@@ -4,9 +4,15 @@ email: [email protected]
 description: > # this means to ignore newlines until "baseurl:"
   Projects by Greg Jolley. It will appear in your document head meta (for
   Google search results) and in your feed.xml site description.
-baseurl: "/amplifier" # the subpath of your site, e.g. /blog/
+
+baseurl: "" # the subpath of your site, e.g. /blog
 url: "http://gregjolley.github.io" # the base hostname & protocol for your site
 github_username:  gregjolley
 
 # Build settings
 markdown: kramdown
+gems:
+  - jekyll-feed
+exclude:
+  - Gemfile
+  - Gemfile.lock