Minor clarifications to multi-arg example (#84)

Author: milesfrain

README.md

@@ -440,7 +440,7 @@ type BlogPost =
   }
 ```
 
-Our API tells us the author of the blog post as a string and whether we follow them as a boolean. This admits more cases than are actually possible -- you can't follow yourself, for example -- so we are more precise and model an `Author` as a sum type.
+Our API sends us the author of the blog post as a string and whether we follow them as a boolean. This admits more cases than are actually possible -- you can't follow yourself, for example -- so we are more precise and model an `Author` as a sum type.
 
 When our application is running we know who the currently-authenticated user is, and we can use that information to determine the `Author` type. That means we can't decode an `Author` from `Json` alone -- we need more information.
 
@@ -456,7 +456,7 @@ decodeJsonAuthor maybeUsername json = do
     -- user is logged in and is the author
     Just (Username username) | author == username -> You
     -- user is not the author, or no one is logged in, so use the `following` flag
-    otherwise -> author # if following then Following else NotFollowing
+    _ -> author # if following then Following else NotFollowing
 
 decodeJsonBlogPost :: Maybe Username -> Json -> Either JsonDecodeError BlogPost
 decodeJsonBlogPost username json = do