README.md in coursemology-evaluator-0.1.4 vs README.md in coursemology-evaluator-0.1.6

- old
+ new
@@ -25,5 +25,28 @@
    1. You might need to configure a new user on your Coursemology instance, enable token 
       authentication, and grant the `auto_grader` system/instance permission.
 
 3. Start the evaluator using the Procfile. You can use [foreman](https://github.com/ddollar/foreman)
    or any similar tool to generate system scripts for boot.
+
+### Command Line Options
+
+#### Compulsory Options
+
+1. `--host`: Coursemology host to connect to
+2. `--api-user-email`: User with autograder flag set
+3. `--api-token`: Authentication token of the user
+
+#### Optional Options
+
+Time options are expected to be strings in [ISO8601 format](https://en.wikipedia.org/wiki/ISO_8601#Durations).
+
+1. `--interval`: Time interval between checks for programming allocations. As this time is
+  expected to be short, specify it with the time components of ISO8601 only. (Hours, minutes, seconds)
+  The time designator `T` must be left out.
+
+2. `--lifetime`: Length of time to cache Docker images. This is expected to be in the order of days.
+  If more granularity is needed, the time designator is required.
+
+  E.g. `1DT2H5M10S`
+
+3. `--one-shot`: Runs once and terminates. Primarily used for testing.