Update README.md

README.md

@@ -20,6 +20,8 @@ Or download [pre-built binary](https://github.com/antonmedv/fx/releases).
 
 ## Usage
 
+Start the interactive viewer via:
+
 ```bash
 $ fx data.json
 ```
@@ -30,6 +32,8 @@ Or
 $ curl ... | fx
 ```
 
+Type `?` to see full list of key shortcuts.
+
 ### Reducers
 
 ```bash
@@ -44,37 +48,20 @@ file.
 $ fx data.json 'groupBy("commit.committer.name")' 'mapValues(_.size)'
 ```
 
-Update JSON using spread operator.
+## Documentation
 
-```bash
-$ echo '{"count": 0}' | fx '{...this, count: 1}'
-{
-  "count": 1
-}
-```
 
-Extract values from maps.
+See full [documentation](https://github.com/antonmedv/fx/blob/master/DOCS.md).
 
-```bash
-$ fx commits.json | fx .[].commit.author
-```
+## Themes
 
-Pretty print.
+Theme can be configured by setting environment variable `FX_THEME` from `1` to `9`:
 
 ```bash
-$ curl ... | fx .
+export FX_THEME=9
 ```
 
-## Documentation
-
-See full [documentation](https://github.com/antonmedv/fx/blob/master/DOCS.md).
-
-## Themes
-
-| `FX_THEME=1` ![](docs/images/1.png) | `FX_THEME=2` ![](docs/images/2.png) | `FX_THEME=3` ![](docs/images/3.png) |
-|:-----------------------------------:|:-----------------------------------:|:-----------------------------------:|
-| `FX_THEME=4` ![](docs/images/4.png) | `FX_THEME=5` ![](docs/images/5.png) | `FX_THEME=6` ![](docs/images/6.png) |
-| `FX_THEME=7` ![](docs/images/7.png) | `FX_THEME=8` ![](docs/images/8.png) | `FX_THEME=9` ![](docs/images/9.png) |
+<img width="1214" alt="themes" src="docs/images/themes.png">
 
 ## License