Updated README.md and added screenshot

README.md

@@ -7,17 +7,21 @@ client.
 ## Description
 
 Gomphotherium is a Mastodon client for the command line, offering a CLI as well
-as a TUI with a usage similar to [rainbowstream](rainbowstream).
+as a TUI with a usage similar to [rainbowstream](rainbowstream). It is intended
+to be used at 80 characters width maximum, but ideally inside [tmux][tmux] as
+a sidebar-style program.
+
+![Gomphotherium](gomphotherium.png)
 
 [rainbowstream]: https://github.com/orakaro/rainbowstream
+[tmux]: https://github.com/tmux/tmux
 
 
 ## Installation
 
-Download a binary from the [releases][releases] page. MacOS, Linux, Windows,
-FreeBSD, and OpenBSD binaries are available.
+Download a binary from the [releases][releases] page.
 
-Or just build it yourself (requires Go 1.16+):
+Or build it yourself (requires Go 1.16+):
 
 ```bash
 make
@@ -39,11 +43,6 @@ gomphotherium authenticate https://YOUR-MASTODON-SERVER-URL-HERE.com
 ```
 
 
-### CLI
-
-TODO
-
-
 ### TUI
 
 Launch the TUI with the following command:
@@ -75,15 +74,133 @@ the Mastodon instance.
 
 ##### Shortcuts
 
-`Ctrl+Q`: Quit Gomphotherium
+`Ctrl` + `Q` \
+Quit Gomphotherium
 
-`Ctrl+R`: Refresh timeline
+`Ctrl` + `R` \
+Refresh timeline
 
-`i`: Enter **Command** mode (while in **Normal** mode)
+`:` \
+Enter **Command** mode (while in **Normal** mode)
 
-`Esc`: Leave **Command** mode (while in **Command** mode)
+`Esc` \
+Leave **Command** mode (while in **Command** mode)
 
 
 ##### Commands
 
+`home` \
+`local` \
+`public` \
+`notifications` \
+Switch between timelines
+
+`t`*` content ...`* \
+`toot`*` content ...`* \
+Publish a new public toot
+
+`tp`*` content ...`* \
+`tootprivate`*` content ...`* \
+Publish a new private toot
+
+`tu`*` content ...`* \
+`tootunlisted`*` content ...`* \
+Publish a new unlisted toot
+
+`td`*` content ...`* \
+`tootdirect`*` content ...`* \
+Publish a new direct toot
+
+`re`*` toot-id content ...`* \
+`reply`*` toot-id content ...`* \
+Reply to a toot publicly
+
+`rep`*` toot-id content ...`* \
+`replyprivate`*` toot-id content ...`* \
+Reply to a toot privately
+
+`reu`*` toot-id content ...`* \
+`replyunlisted`*` toot-id content ...`* \
+Reply to a toot unlisted
+
+`red`*` toot-id content ...`* \
+`replydirect`*` toot-id content ...`* \
+Reply to a toot directly
+
+`rt`*` toot-id`* \
+`retoot`*` toot-id`* \
+`boost`*` toot-id`* \
+Boost a toot
+
+`ut`*` toot-id`* \
+`unretoot`*` toot-id`* \
+`unboost`*` toot-id`* \
+Undo boosting a toot
+
+`fav`*` toot-id`* \
+Fav a toot
+
+`unfav`*` toot-id`* \
+Undo fav-ing a toot
+
+`open`*` toot-id`* \
+Open toot in system browser
+
+`share`*` toot-id`* \
+Copy toot URL to the clipboard
 
+`help` \
+`?` \
+Show help page
+
+`quit` \
+`exit` \
+`bye` \
+Quit Gomphotherium
+
+**Info:** \
+- `content ...` describes the text content of a toot, including 
+  [inline shortcodes](#inline-shortcodes)
+_ `toot-id` describes the toot ID (number) visible on the right side of each 
+  toot in the timeline
+
+##### Inline Shortcodes
+
+Inline shortcodes allow to add additional info to toots. They can be added
+anywhere in the toot content as they get filtered from the toot before
+publishing.
+
+`~!!` \
+Mark toot as sensitive; one-time shortcode
+
+`~#[`*`text ...`*`]` \
+Add content warning (spoiler) text to toot; one-time shortcode
+
+`~:[`*`/path/to/file`*`]` \
+Add media by file path to toot; can be specified multiple times
+
+
+##### Usage Examples
+
+`t Hello World!` \
+Publish a new public toot that says *Hello World!*
+
+`tp Mondays are fine. It’s your life that sucks. ~#[Controversial joke]` \
+Publish a new private toot that says *Mondays are fine. It’s your life that 
+sucks.* with a content warning that says *Controversial joke*
+
+`tu Check out my mustache! ~:[/home/user/Photos/awesome_mustache.jpg] ~!!` \
+Publish a new unlisted toot with a photo attached to it, that is flagged
+sensitive
+
+`re 11 I think so, @brain, but aren't we out of shaving cream?` \
+Publicly reply to toot with ID *11* with *I think so, @brain, but aren't we out 
+of shaving cream?*
+
+`rt 11` \
+Retoot/boost toot with ID *11*
+
+
+### CLI
+
+TODO