feat(pinning): add pin.ls + rm spec

Author: daviddias

API/pinning-api/README.md

@@ -25,34 +25,49 @@ Example:
 ipfs.pin.add(hash, function (err) {})
 ```
 
-
 #### `ls`
 
-> 
+> List all the objects pinned to local storage or under a specific hash.
 
 ##### `Go` **WIP**
 
-##### `JavaScript` - ipfs.SOMETHING(data, [callback])
+##### `JavaScript` - ipfs.pin.ls([hash, options, callback])
 
-`callback` must follow `function (err, res) {}` signature, where `err` is an error if the operation was not successful. `res` will be an array of:
+Where:
+
+- `hash` is an IPFS multihash.
+- `options` is an object that can contain the following keys:
+  - `type` - Return also the type of pin (direct, indirect or recursive)
+
+`callback` must follow `function (err, pinset) {}` signature, where `err` is an error if the operation was not successful. `pinset` is an array of objects with keys `hash` and `type`.
 
 If no `callback` is passed, a promise is returned.
 
 Example:
 
+```JavaScript
+ipfs.pin.ls(function (err, pinset) {})
+```
 
 
 #### `rm`
 
-> 
+> Remove an hash from the pinset
 
 ##### `Go` **WIP**
 
-##### `JavaScript` - ipfs.SOMETHING(data, [callback])
+##### `JavaScript` - ipfs.pin.rm(hash, [callback])
+
+Where `hash` is a multihash.
 
-`callback` must follow `function (err, res) {}` signature, where `err` is an error if the operation was not successful. `res` will be an array of:
+`callback` must follow `function (err) {}` signature, where `err` is an error if the operation was not successful. 
 
 If no `callback` is passed, a promise is returned.
 
 Example:
 
+```JavaScript
+ipfs.pin.rm(hash, function (err, pinset) {})
+```
+
+