ipc: Add link to Crystal library

diff --git a/_docs/ipc b/_docs/ipc
index 4729e802265cc5f314ddd82e56669342c94a3d4b..2a6112bde87598e2211856c8b4f9824e1fb1ed19 100644 (file)
--- a/_docs/ipc
+++ b/_docs/ipc
@@ -879,6 +879,8 @@ C::
        * https://github.com/acrisci/i3ipc-glib
 C++::
        * https://github.com/drmgc/i3ipcpp
+Crystal::
+    * https://github.com/woodruffw/i3.cr
 Go::
        * https://github.com/mdirkse/i3ipc-go
 JavaScript::