Optimisations

- Fixed issue with `InputFile` not setting file-name properly.
- Fixed issue with `InputFile` not setting the correct index when
posting certain arrays.
- Made Csrf-token cookie provider more versitile by creating new
`CookieTokenProvider` and `ITokenProvider` classes.
- Strict-checks optimisations.
- Updated documentation to reflect new changes.

src/Pecee/Http/Input/InputItem.php

@@ -13,7 +13,7 @@ class InputItem implements IInputItem
         $this->value = $value;
 
         // Make the name human friendly, by replace _ with space
-        $this->name = ucfirst(str_replace('_', ' ', $this->index));
+        $this->name = ucfirst(str_replace('_', ' ', strtolower($this->index)));
     }
 
     /**