Merge pull request #13 from janetacarr/update-docs

Update readme

README.md

@@ -13,7 +13,7 @@ To start building a quadtree, create a quadtree using `->quadtree`  with a bound
 ``` clojure
 user> (use 'quadtree-cljc.core)
 user> (def tree (-> (->bounds 0 0 800 600)
-                    (->quadtree 5 5 0 [] [])))
+                    (->quadtree 5 5)))
 #'user/tree
 user> tree
 {:bounds {:x 0, :y 0, :width 800, :height 600},
@@ -42,7 +42,7 @@ Or you can insert multiple with `insert-all`:
 
 ``` clojure
 user> (def tree (-> (->bounds 0 0 800 600)
-                    (->quadtree 5 5 0 [] [])
+                    (->quadtree 5 5)
                     (insert-all [{:x 0 :y 0 :width 10 :height 10}
                                  {:x 0 :y 5 :width 10 :height 10}
                                  {:x 100 :y 150 :width 100 :height 100}
@@ -55,7 +55,7 @@ And finally we can even find colliding / intersection objects in the tree:
 
 ``` clojure
 user> (-> (->bounds 0 0 800 600)
-          (->quadtree 5 5 0 [] [])
+          (->quadtree 5 5)
           (insert-all [{:x 0 :y 0 :width 10 :height 10}
                        {:x 0 :y 5 :width 10 :height 10}
                        {:x 100 :y 150 :width 100 :height 100}