Rename fletch -> dartino

samples/todomvc/android/TodoMVC/app/build.gradle

 apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 21
     buildToolsVersion "21.1.2"
 
     defaultConfig {
-        applicationId "com.google.fletch.todomvc"
+        applicationId "com.google.dartino.todomvc"
         minSdkVersion 15
         targetSdkVersion 21
         versionCode 1
         versionName "1.0"
     }
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
 }
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     compile 'com.android.support:appcompat-v7:21.0.3'
 }