watson: add page (#5086)

pages/common/watson.md

@@ -0,0 +1,20 @@
+# watson
+
+> A wonderful CLI to track your time.
+> More information: <https://github.com/TailorDev/Watson>.
+
+- Start monitoring time in project:
+
+`watson start {{project}}`
+
+- Start monitoring time in project with tags:
+
+`watson start {{project}} +{{tag}}`
+
+- Stop monitoring time for the current project:
+
+`watson stop`
+
+- Display latest working sessions:
+
+`watson log`