Update usage docs in readme

README.md

@@ -13,7 +13,19 @@ pip install python-semantic-release
 The general idea is to have some sort of tag in commit messages that indicates certain types of changes.
 If a commit message lack a tag it is ignored. Running release can be run locally or from a CI service.
 
-Creating a new release: `$ semantic-release version`
+```
+Usage: semantic-release [OPTIONS] COMMAND
+
+Options:
+  --major  Force major version.
+  --minor  Force minor version.
+  --patch  Force patch version.
+  --help   Show this message and exit.
+```
+
+### Commands
+
+* `version` - Create a new release. Will change the version and commit it.
 
 ### Configuration
 All configuration described here belongs in `setup.cfg` in a section: `semantic-release`.

semantic_release/cli.py

@@ -7,9 +7,9 @@
 
 @click.command()
 @click.argument('command')
-@click.option('--major', 'force_level', flag_value='major')
-@click.option('--minor', 'force_level', flag_value='minor')
-@click.option('--patch', 'force_level', flag_value='patch')
+@click.option('--major', 'force_level', flag_value='major', help='Force major version.')
+@click.option('--minor', 'force_level', flag_value='minor', help='Force minor version.')
+@click.option('--patch', 'force_level', flag_value='patch', help='Force patch version.')
 def main(command, **kwargs):
     globals()[command](**kwargs)