readme update

README.md

@@ -4,6 +4,31 @@ Largely based on the Python project Locust.
 
 Sets up an HTTP API that provides the load test data in JSON.
 
+# Usage
+```
+Usage of ltt:
+  -api-host string
+        REST API port to bind to. (Default all, empty string)
+  -api-port int
+        REST API port to bind to. (Default 4141) (default 4141)
+  -log-prefix string
+        Logging prefix (Default empty string)
+  -max-sleep-time int
+        Maximum sleep time between a user's tasks in seconds (Default 10) (default 10)
+  -min-sleep-time int
+        Minimum sleep time between a user's tasks in seconds (Default 1) (default 1)
+  -num-spawn-per-sec int
+        Number of user to spawn per second (Default 1) (default 1)
+  -num-users int
+        Number of users to spawn (default 5)
+  -request-timeout int
+        Request timeout in seconds (Default 5) (default 5)
+  -spawn-on-startup
+        If true, spawning will begin on startup (Default false)
+  -verbose
+        Verbose logging (default false)
+```
+
 ## User-Interfaces
 
 Terminal-UI