Add plugin for tmux-continuum status

INSTALL.md

@@ -318,4 +318,25 @@ Set the label when there is one client, or more than one client
 ```bash
 set -g @dracula-clients-singular client
 set -g @dracula-clients-plural clients
-```
+```
+
+#### continuum options
+
+Hide output if no save has been performed recently
+(otherwise, show the continuum save interval)
+
+```bash
+set -g @dracula-continuum-mode alert
+```
+
+Show the time since the last continuum save
+
+```bash
+set -g @dracula-continuum-mode time
+```
+
+In alert mode, show if a the last save was performed less then one minute ago (default is 15 seconds)
+
+```bash
+set -g @dracula-continuum-time-threshold 60
+```