Add screenshot and update usage instructions

README.md

@@ -1,16 +1,20 @@
 # Pole (vault)
 
-Browse secrets in vault in the terminal. To do it, do:
+Browse secrets in vault in the terminal.
+
+![Screenshot](https://private-user-images.githubusercontent.com/25964718/359639733-495bdcde-a41c-41a2-8be7-9f785cc9f300.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.ue-7j9fB9FFYTkErwmfK9d_P5IAMjoZuqLvlQaM60us)
+
+To do it, do:
 
 ```sh
-git clone <this>
-go install .
+git clone https://github.com/slarwise/pole
+go install
 export VAULT_ADDR=https://my-vault.com
 export VAULT_TOKEN=secret-token
-pole3
+pole
 ```
 
-Navigate secrets and mounts with the arrow keys.
+Filter secrets fuzzily by typing letters, navigate secrets and mounts with the arrow keys.
 
 ## Development