Fix package

Author: darkclouder

README.md

@@ -1,3 +1,30 @@
 # cli-context
 This is a library which supports CLI contexts for action hierarchies.
 For that, you have to use the `CliContext` class and create your own contexts.
+
+## Usage
+Install this package with pip (or manually).
+
+In your project, create a python file which will be called as a CLI entry-point:
+```python
+import sys
+from .my_entry_context import context as entry_ctx
+
+
+if __name__ == "__main__":
+    entry_ctx.run((sys.argv[0],), sys.argv[1:])
+```
+
+In `my_entry_context.py`:
+```python
+from cli_context import CliContext
+
+context = CliContext(
+    "This is my fancy CLI",
+    sub_contexts={
+        "run": run_context,
+        "do": another_context,
+    }
+)
+
+```

cli-context/__init__.py

@@ -0,0 +1 @@
+from .cli_context import CliContext

cli_context/__init__.py

@@ -29,6 +29,7 @@ def print_help(self, program):
             program_str = " ".join(program)
 
             print("usage: %s <command> [<args>]" % program_str)
+            print("\n" + self.description)
 
             if len(self.sub_contexts) > 0:
                 print("\nCommands:")