docs: mark destroy parity complete

README.md

@@ -38,6 +38,7 @@ Implemented commands:
 - `pull [CASTLE]`
 - `push [CASTLE]`
 - `commit -m MESSAGE [CASTLE]`
+- `destroy [CASTLE]`
 - `rc [CASTLE]`
 - `version`
 
@@ -51,7 +52,6 @@ Implemented commands:
 
 Not yet implemented:
 
-- `destroy`
 - `cd`
 - `open`
 - `exec`
@@ -65,7 +65,7 @@ Command parity:
 - [x] `pull`
 - [x] `push`
 - [x] `commit`
-- [ ] `destroy`
+- [x] `destroy`
 - [ ] `cd`
 - [ ] `open`
 - [ ] `exec`