TBR: java/projects/todos: Upgrade gradle. 2.8 => 2.12

As title.

Since I upgraded Android Studio, I was now able to see a unit test
that I'd missed earlier. Renamed from firebaseexample to todos.

Change-Id: Ic5fad1eb59fa806e6d877906433dba64235e3891
diff --git a/projects/todos/app/src/test/java/io/v/firebaseexample/ExampleUnitTest.java b/projects/todos/app/src/test/java/io/v/todos/ExampleUnitTest.java
similarity index 100%
rename from projects/todos/app/src/test/java/io/v/firebaseexample/ExampleUnitTest.java
rename to projects/todos/app/src/test/java/io/v/todos/ExampleUnitTest.java
diff --git a/projects/todos/build.gradle b/projects/todos/build.gradle
index e0b366a..168f129 100644
--- a/projects/todos/build.gradle
+++ b/projects/todos/build.gradle
@@ -5,7 +5,7 @@
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'com.android.tools.build:gradle:2.0.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/projects/todos/gradle/wrapper/gradle-wrapper.properties b/projects/todos/gradle/wrapper/gradle-wrapper.properties
index f23df6e..330e95a 100644
--- a/projects/todos/gradle/wrapper/gradle-wrapper.properties
+++ b/projects/todos/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.8-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.12-all.zip