reorg dir structure:

- keep shared and electron build at root
- move static files for replayweb.page and Jekyll config to docs/
- move Jekyll markdown to docs/docs/

docs/_config.yml

@@ -0,0 +1,24 @@
+remote_theme: pmarsceill/just-the-docs
+#theme: "just-the-docs"
+
+title: ReplayWeb.Page
+
+# Enable or disable the site search
+search_enabled: false
+
+# Set the search token separator for hyphenated-word search:
+search_tokenizer_separator: /[\s/]+/
+
+# Enable or disable heading anchors
+heading_anchors: true
+
+# Aux links for the upper right navigation
+aux_links:
+  "Back to ReplayWeb.page":
+    - "https://replayweb.page/"
+
+logo: "/assets/logo.svg"
+
+plugins:
+  - jekyll-remote-theme
+