Fix grammatical error in README

README

@@ -45,7 +45,7 @@ IRCClientChannelDelegate.h
 
 NOTE on strings:
 
-IRCClient stores and passes all strings (messages, nicks, channel names, mode strings, channel topics, etc.) as NSData objects, which contain null-terminated C strings. Values passed to framework methods (such as the IRC commands) should also be in this format[1]. This means that IRCClient is encoding-agnostic[2]; it is up to you to pass it properly encoded C-string representations of your text strings, and it is also up to you to select an appropriate encoding for display or other handling of received strings, as necessary. The 'encoding' property of IRCClientSession and IRCClientChannel may be useful in this regard (i.e. for the convenience associating a server's or channel's preferred encoding with the relevant server or channel object), although note that this property is almost entirely epiphenomenal[3].
+IRCClient stores and passes all strings (messages, nicks, channel names, mode strings, channel topics, etc.) as NSData objects, which contain null-terminated C strings. Values passed to framework methods (such as the IRC commands) should also be in this format[1]. This means that IRCClient is encoding-agnostic[2]; it is up to you to pass it properly encoded C-string representations of your text strings, and it is also up to you to select an appropriate encoding for display or other handling of received strings, as necessary. The 'encoding' property of IRCClientSession and IRCClientChannel may be useful in this regard (i.e. for the convenience of associating a server's or channel's preferred encoding with the relevant server or channel object), although note that this property is almost entirely epiphenomenal[3].
 
 [1] Although note that if you pass unterminated strings instead, IRCClient will add the null termination for you - but there is a slight performance penalty for this, so be sure to null-terminate the contents of your NSData objects, for optimal performance.