add asccinema json format

Author: ttehasi

.gitignore

@@ -5,5 +5,7 @@ gendiff1.cast
 gendiff2.cast
 gendiff11.cast
 gendiff22.cast
-gendiffj_plain.cast
-gendiffy_plain.cast
+gendiffj.cast
+gendiffy.cast
+gendiffj_json.cast
+gendiffy_json.cast

README.md

@@ -25,6 +25,14 @@
 
 [![asciicast](https://asciinema.org/a/Rfrx6rnCFN0Bv6gBXtXo4ilZG.svg)](https://asciinema.org/a/Rfrx6rnCFN0Bv6gBXtXo4ilZG)
 
+## Asciinema JSON file (json format name):
+
+[![asciicast](https://asciinema.org/a/4I6mEhSQg3cpc7PTGsdX9tbxm.svg)](https://asciinema.org/a/4I6mEhSQg3cpc7PTGsdX9tbxm)
+
+## Asciinema YAML file (json format name):
+
+[![asciicast](https://asciinema.org/a/jl5IqTYh5vxNpixkSOtzUIfaW.svg)](https://asciinema.org/a/jl5IqTYh5vxNpixkSOtzUIfaW)
+
 ### Links
 
 This project was built using these tools: