Add gallery generation script

README.md

@@ -34,16 +34,21 @@ You can supply a JSON stylesheet with the `-s` flag:
 ./gold -s mystyle.json
 ```
 
-Style definitions located in `styles/` can be embedded into the binary by
-running [statik](https://github.com/rakyll/statik).
-```
-statik -f -src styles -include "*.json"
-```
+## Example Output
+
+![Gold Dark Style](https://github.com/charmbracelet/gold/raw/master/cmd/gold/styles/gold_dark.png)
 
 ## Colors
 
 Currently `gold` uses the [Aurora ANSI colors](https://godoc.org/github.com/logrusorgru/aurora#Index).
 
-## Example Output
+## Development
 
-![Gold Dark Style](https://github.com/charmbracelet/gold/raw/master/cmd/gold/styles/gold_dark.png)
+Style definitions located in `styles/` can be embedded into the binary by
+running [statik](https://github.com/rakyll/statik):
+```
+statik -f -src styles -include "*.json"
+```
+
+You can re-generate screenshots of all available styles by running `gallery.sh`.
+This requires `termshot` and `pngcrush` installed on your system!

gallery.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+for style in ./styles/*.json; do
+    echo "Generating screenshot for ${style}"
+    filename="gold_`basename -s .json ${style}`.png"
+    termshot -o ./styles/ -f "$filename" ./gold -s ${style}
+    pngcrush -ow "./styles/$filename"
+done