Update README with optional params

Author: tylercamp

README.md

@@ -28,7 +28,7 @@ The workflow will be set to fail if:
 | `server-url`               | The URL for the Code Dx server (typically ends with `/codedx`)                                           |               | Yes      |
 | `api-key`                  | An API Key or Personal Access Token to use when connecting to Code Dx                                    |               | Yes      |
 | `project-id`               | The ID of a project (an integer) created in Code Dx                                                      |               | Yes      |
-| `source-and-binaries-glob` | A comma-separated-list of file globs matching source and binary files to be packaged and sent to Code Dx |               | Yes      |
+| `source-and-binaries-glob` | A comma-separated-list of file globs matching source and binary files to be packaged and sent to Code Dx | `undefined`   | No       |
 | `tool-outputs-glob`        | A comma-separated list of file globs matching tool output/scan result files                              | `undefined`   | No       |
 | `wait-for-completion`      | Whether to wait for the analysis to complete before exiting                                              | `false`       | No       |
 | `ca-cert`                  | A custom CA cert to use for HTTPS connections to Code Dx                                                 | `undefined`   | No       |