Add comments to gradle build files.

build.gradle

@@ -5,6 +5,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:1.3.0'
+        // Used for annotation processing needed by the AndroidAnnotations library
         classpath 'com.neenbedankt.gradle.plugins:android-apt:1.6'
     }
 }

drag-sort-listview-gradle/build.gradle

@@ -1,5 +1,8 @@
 apply plugin: 'com.android.library'
 
+// This file is here (rather than in the drag-sort-listview project)
+// so we can control how it builds without having to submit pull requests.
+
 dependencies {
     compile 'com.android.support:support-v4:19.1.0'
 }

holoeverywhere-gradle/build.gradle

@@ -1,5 +1,8 @@
 apply plugin: 'com.android.library'
 
+// This file is here (rather than in the holoeverywhere project)
+// so we can control how it builds without having to submit pull requests.
+
 dependencies {
     compile 'com.android.support:support-v4:13.0.0'
     compile 'com.actionbarsherlock:actionbarsherlock:4.4.0@aar'

holoeverywhere-preferences-gradle/build.gradle

@@ -1,5 +1,8 @@
 apply plugin: 'com.android.library'
 
+// This file is here (rather than in the holoeverywhere project)
+// so we can control how it builds without having to submit pull requests.
+
 dependencies {
     compile project(':holoeverywhere-gradle')
 }