Downgrade to Gradle tools 1.0.1

1.1.* cause "Cannot resolve symbol" errors in Android Studio, even though Gradle
can build the app.

build.gradle

@@ -3,7 +3,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.1.0'
+        classpath 'com.android.tools.build:gradle:1.0.1'
         classpath files('gradle/libs/gradle-witness.jar')
     }
 }