Release 2.1.2

Author: wangzhzh

aop/ext.gradle

@@ -1,5 +1,5 @@
 project.ext {
-    pluginVersion = '2.1.1'
+    pluginVersion = '2.1.2'
     Properties properties = new Properties()
     if (project.file('local.properties').exists()) {
         properties.load(project.file('local.properties').newDataInputStream())

aop/src/main/groovy/com/sensorsdata/analytics/android/plugin/SensorsAnalyticsUtil.groovy

@@ -19,6 +19,7 @@ class SensorsAnalyticsUtil implements Opcodes {
          */
         targetFragmentClass.add('android/support/v4/app/Fragment')
         targetFragmentClass.add('android/support/v4/app/ListFragment')
+        targetFragmentClass.add('android/support/v4/app/DialogFragment')
     }
 
     static boolean isPrivate(int access) {