convert readme options to help output

Author: Kelly Selden

README.md

@@ -70,20 +70,37 @@ ember-cli-update --run-codemods
 
 ## Options
 
-| Option | Description | Type | Examples | Default |
-|---|---|---|---|---|
-| --blueprint | Provide a custom blueprint for use in the update | String | "@glimmer/blueprint" "git+https://[email protected]/tildeio/libkit.git" "../blueprint" | |
-| --from | Use a starting version that is different than what is in your package.json | String | "2.9.1" | |
-| --to | Update to a version that isn\'t latest | String | "2.14.1" "~2.15" "latest" "beta" | |
-| --resolve-conflicts | Automatically run git mergetool if conflicts found | Boolean | | false |
-| --run-codemods | Run codemods to help update your code | Boolean | | false |
-| --codemods-source | Supply your own codemods manifest via URL | String | "ember-app-codemods-manifest@*" "git+https://github.com/ember-cli/ember-app-codemods-manifest.git#semver:*" | |
-| --codemods-json | Supply your own codemods manifest via JSON | String | `{ /* json */ }` | |
-| --reset | Reset your code to the default blueprint at the new version | Boolean | | false |
-| --compare-only | Show the changes between different versions without updating | Boolean | | false |
-| --stats-only | Show all calculated values regarding your project | Boolean | | false |
-| --list-codemods | List available codemods | Boolean | | false |
-| --create-custom-diff | Create a personal diff using system .ember-cli | Boolean | | false |
+```
+  --help                       Show help                               [boolean]
+  --version                    Show version number                     [boolean]
+  --blueprint, -b              Provide a custom blueprint for use in the update
+                               ("@glimmer/blueprint",
+                               "git+https://[email protected]/tildeio/libkit.git",
+                               "../blueprint")                          [string]
+  --from                       Use a starting version that is different than
+                               what is in your package.json ("2.9.1")   [string]
+  --to                         Update to a version that isn't latest ("2.14.1",
+                               "~2.15", "latest", "beta")               [string]
+  --resolve-conflicts          Automatically run git mergetool if conflicts
+                               found                  [boolean] [default: false]
+  --run-codemods               Run codemods to help update your code
+                                                      [boolean] [default: false]
+  --codemods-source            Supply your own codemods manifest via URL
+                               ("ember-app-codemods-manifest@*",
+                               "git+https://github.com/ember-cli/ember-app-codem
+                               ods-manifest.git#semver:*")              [string]
+  --codemods-json              Supply your own codemods manifest via JSON (`{ /*
+                               json */ }`)                              [string]
+  --reset                      Reset your code to the default blueprint at the
+                               new version            [boolean] [default: false]
+  --compare-only               Show the changes between different versions
+                               without updating       [boolean] [default: false]
+  --stats-only                 Show all calculated values regarding your project
+                                                      [boolean] [default: false]
+  --list-codemods              List available codemods[boolean] [default: false]
+  --create-custom-diff, --ccd  Create a personal diff using system .ember-cli
+                                                      [boolean] [default: false]
+```
 
 ## Power User Guide