Updated documentation

scrbl/class.scrbl

@@ -54,6 +54,11 @@ Removes @racket[key] from the store and returns the object itself.
 Returns @racket[#t] if @racket[key] exists, and @racket[#f] otherwise.
 }
 
+@defmethod[(count) number?]{
+
+Returns the number of keys in the keystore.
+}                            
+
 @defmethod[(glob [pattern string?]) (listof any/c)]{
 
 Returns keys matching @racket[pattern].

scrbl/keystore.scrbl

@@ -64,6 +64,11 @@ the symbol @racket['ks-nil] is returned.
 Returns @racket[#t] if the key exists, and @racket[#f] otherwise.
 }
 
+@defproc[(ks-key-count [ks keystore?]) number?]{
+
+Returns the number of keys in the keystore.                                                 
+}                                                
+
 @defproc[(ks-drop! [ks keystore?] [key any/c]) boolean?]{
 
 Removes the key from the store. The function always returns @racket[#t].