Updated StringExtension.cs - CamelFriendly method

Made it more obvious how CamelFriendly was choosing to enter spaces in a string

Done on behalf of Radio Systems Corporation

src/Orchard/Utility/Extensions/StringExtensions.cs

@@ -17,7 +17,7 @@ namespace Orchard.Utility.Extensions {
 
             for (int i = camel.Length-1; i>0; i--) {
                 var current = sb[i];
-                if('A' <= current && current <= 'Z') {
+                if(char.IsUpper(current)) {
                     sb.Insert(i, ' ');
                 }
             }
@@ -357,4 +357,4 @@ namespace Orchard.Utility.Extensions {
             return Encoding.UTF8.GetString(Convert.FromBase64String(value));
         }
     }
-}
+}