Add better README

README.md

@@ -15,7 +15,43 @@
 </p>
 
 
-# tagwiki
+# Tagwiki
 
-A tag-addressable wiki.
+Tagwiki is a wiki in which you link to pages by specifing hashtags they contain.
 
+Example: `/tagwiki/help` link will lead to all pages that contain both `#tagwiki` and `#help`.
+
+This allows effortless and self-structuring organization and editing experience,
+as the page collection grows and evolves.
+
+### My use-case
+
+I just need a personal wiki, that I can throw random things into,
+that I don't have to pre-plan or carefully maintain.
+
+### User facing features and design goals
+
+* browser-based UI,
+* uses Markdown for content,
+* brutally simple,
+* fast,
+* excelent support for keyboard navigation,
+* keeps pages as markdown files in a directory,
+
+### Under the hood
+
+* Rust, `async/await`
+
+### Feature ideas:
+
+* "journal mode" - for easy note taking
+* support public-facing setups (authentication, permissions, and so on)
+
+### Installing & running
+
+Like any Rust program. `cargo install --git https://github.com/dpc/tagwiki`.
+
+To run `tagwiki <markdown_files_directory>`
+
+See `docs` directory for more user-documentation. Pages inside it are
+tagwiki content, so you can try `tagwiki ./docs` try things out.