Update README.md

README.md

@@ -1,53 +1,54 @@
 # Countdown
 
-<p align="center"><img src="https://user-images.githubusercontent.com/141232/54696023-9ed03e00-4b5d-11e9-9c7b-d6f67691e70c.gif" width="450" alt="Screen shot"></p>
+<p align="center">
+  <br>
+  <img src="demo.gif" width="600" alt="Countdown Demo">
+  <br>
+</p>
 
 ## Install
 
-```bash
+```sh
+brew install countdown
+```
+
+```sh
 go install github.com/antonmedv/countdown@latest
 ```
 
 Or download prebuilt binary from [releases](https://github.com/antonmedv/countdown/releases).
 
 ## Usage
 
-Specify duration in Go format `1h2m3s`.
+Specify duration in Go format `1h2m3s` or a target time: `02:15pm`, `14:15`.
 
-```bash
+```sh
 countdown 25s
-```
-
-Or specify target time: `02:15PM` or `14:15`. For instance, if the current time 
-would be 11:30, the next example would trigger a 2-minute countdown. 
-
-```bash
 countdown 11:32
 ```
 
 Add a command with `&&` to run after the countdown.
 
-```bash
+```sh
 countdown 1m30s && say "Hello, world"
 ```
 
 Count from up from the zero.
 
-```bash
+```sh
 countdown -up 30s
 ```
 
-Announce (via macOS `say` command) last 10 seconds
+Announce (via macOS `say` command) last 10 seconds.
 
-```bash
+```sh
 countdown -say 10s
 ```
 
 ## Key binding
 
-- `p` or `P`: To pause the countdown.
-- `c` or `C`: To resume the countdown.
-- `Esc` or `Ctrl+C`: To stop the countdown without running next command.
+- `Space`: Pause/Resume the countdown.
+- `Esc` or `Ctrl+C`: Stop the countdown without running the next command.
 
 ## License