add snippet to readme

Signed-off-by: Bryce Palmer <everettraven@gmail.com>

README.md

@@ -42,6 +42,8 @@ kind create cluster
 
 The `test.json` file contains samples for each of the different panel types that `buoy` currently supports. As this is a hobby project very early in the development cycle there are some limitations and things are bound to not work as expected.
 
+`buoy` uses https://github.com/tidwall/gjson for the path evaluation and extracting of values from resources. Please consult their documentation for valid path syntax
+
 ## Controls
 - `ctrl+c`, `q`, `esc` will quit the program and exit the tui
 - `tab` will switch the active tab to the one to the right of the currently active tab