Add note in options reference about using parameters in the API

Author: Kevin Paulisse

doc/optionsref.md

@@ -1092,4 +1092,12 @@ parameters are to be checked. (<a href="../lib/octocatalog-diff/cli/options/vali
     </td>
   </tr>
 
-</table>
+</table>
+
+## Using these options in API calls
+
+Most of these options can also be used when making calls to the [API](/doc/dev/api.md).
+
+Generally, parameters for the API are named corresponding to the names of the command line parameters, with dashes (`-`) converted to underscores (`_`). For example, the command line option `--hiera-config` is passed to the API as the symbol `:hiera_config`.
+
+Each of the options above has a link to the source file where it is declared, should you wish to review the specific parameter names and data structures that are being set.

rake/templates/optionsref.erb

@@ -34,3 +34,11 @@ Usage: octocatalog-diff [command line options]
   </tr>
 <% end %>
 </table>
+
+## Using these options in API calls
+
+Most of these options can also be used when making calls to the [API](/doc/dev/api.md).
+
+Generally, parameters for the API are named corresponding to the names of the command line parameters, with dashes (`-`) converted to underscores (`_`). For example, the command line option `--hiera-config` is passed to the API as the symbol `:hiera_config`.
+
+Each of the options above has a link to the source file where it is declared, should you wish to review the specific parameter names and data structures that are being set.