Add example for :after :default to the README (#146)

* Add example for `:after :default` to the README

* fix spelling in comments

README.md

@@ -148,6 +148,10 @@ the last argument of the next function:
 ;; -> [:default :object :string]
 ```
 
+An example usecase for `:after` is chess. When looking up legal moves, you
+implement how each piece can move, then in `:after :default` limit it to only
+spaces on the board.
+
 #### `:around` methods
 
 `:around` methods are called around all other methods and give you the power to choose how or when to invoke those

src/methodical/interface.clj

@@ -59,7 +59,7 @@
     dispatch value, existing implementations of `MethodTable` are currently only able to remove exact matches -- for
     functions, this usually means identical objects.
 
-    In the future, I hope to fix this by storing unique indentifiers in the metadata of methods in the map."))
+    In the future, I hope to fix this by storing unique identifiers in the metadata of methods in the map."))
 
 (defprotocol Dispatcher
   "A *dispatcher* decides which dispatch value should be used for a given set of arguments, which primary and

test/methodical/util_test.clj

@@ -374,12 +374,12 @@
     (u/add-aux-method-with-unique-key! #'unique-key-multifn :before ::key #(conj % :before) "Florida key")
     (t/is (= 1
              (count (u/aux-methods unique-key-multifn :before ::key)))
-          "should be able to desctructively add an aux method with a unique key")
+          "should be able to destructively add an aux method with a unique key")
 
     (u/remove-aux-method-with-unique-key! #'unique-key-multifn :before ::key "Florida key")
     (t/is (= 0
              (count (u/aux-methods unique-key-multifn :before ::key)))
-          "should be able to desctructively remove an aux method with a unique key")))
+          "should be able to destructively remove an aux method with a unique key")))
 
 (t/deftest remove-all-methods-test
   (let [f (-> (m/default-multifn class)