Rename fletch -> dartino

pkg/raspberry_pi/lib/raspberry_pi.dart

 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 /// Access to Raspberry Pi 2 specific hardware features such as onboard LEDs.
 /// Also provides an API to the Sense HAT shield.
 ///
 /// The class [RaspberryPi] provide access to the Raspberry Pi features.
 ///
 /// Usage
@@ skipping 11 matching lines @@
 ///   pi.leds.activityLED.on();
 /// }
 /// ```
 ///
 /// Reporting issues
 /// ----------------
 /// Please file an issue [in the issue
 /// tracker](https://github.com/dartino/sdk/issues/new?title=Add%20title&labels=Area-Package&body=%3Cissue%20description%3E%0A%3Crepro%20steps%3E%0A%3Cexpected%20outcome%3E%0A%3Cactual%20outcome%3E).
 library raspberry_pi;
 
-import 'dart:fletch.ffi';
+import 'dart:dartino.ffi';
 import 'dart:typed_data';
 
 import 'package:file/file.dart';
 import 'package:gpio/gpio.dart' as gpio;
 
 // Foreign functions used.
 final ForeignFunction _open = ForeignLibrary.main.lookup('open');
 final ForeignFunction _mmap = ForeignLibrary.main.lookup('mmap');
 
 /// Possible modes of the on-board LEDs
@@ skipping 353 matching lines @@
   void setMode(OnboardLEDMode mode) {
     _leds._setMode(_led, mode);
   }
 
   /// Turn on the LED.
   void on() => _leds._setBrightness(_led, true);
 
   /// Turn off the LED.
   void off() => _leds._setBrightness(_led, false);
 }