iconics 2.6.6 is not working in Android 4.1.1
As title, but it works when downgrade to 2.5.11.
Exception is as below.

```
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sample.test/com.sample.test.views.MainActivity}: android.content.res.Resources$NotFoundException: File res/drawable/abc_ic_ab_back_material.xml from drawable resource ID #0x7f020013
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
    at android.app.ActivityThread.access$600(ActivityThread.java:130)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4745)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
    at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.content.res.Resources$NotFoundException: File res/drawable/abc_ic_ab_back_material.xml from drawable resource ID #0x7f020013
    at android.content.res.Resources.loadDrawable(Resources.java:1918)
    at android.content.res.Resources.getDrawable(Resources.java:659)
    at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:354)
    at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:193)
    at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:181)
    at android.support.v7.widget.AppCompatDrawableManager.checkVectorDrawableSetup(AppCompatDrawableManager.java:689)
    at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:186)
    at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:77)
    at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:83)
    at android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:146)
    at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28)
    at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41)
    at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:193)
    at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:173)
    at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:511)
    at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:71)
    at com.sample.test.views.MainActivity.onCreate(MainActivity.java:100)
    at android.app.Activity.performCreate(Activity.java:5008)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
    at android.app.ActivityThread.access$600(ActivityThread.java:130) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:137) 
    at android.app.ActivityThread.main(ActivityThread.java:4745) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:511) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
    at dalvik.system.NativeStart.main(Native Method) 
 Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #17: invalid drawable tag vector
    at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:877)
    at android.graphics.drawable.Drawable.createFromXml(Drawable.java:818)
    at android.content.res.Resources.loadDrawable(Resources.java:1915)
    at android.content.res.Resources.getDrawable(Resources.java:659) 
    at android.support.v4.content.ContextCompat.getDrawable(ContextCompat.java:354) 
    at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:193) 
    at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:181) 
    at android.support.v7.widget.AppCompatDrawableManager.checkVectorDrawableSetup(AppCompatDrawableManager.java:689) 
    at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:186) 
    at android.support.v7.widget.TintTypedArray.getDrawableIfKnown(TintTypedArray.java:77) 
    at android.support.v7.app.AppCompatDelegateImplBase.<init>(AppCompatDelegateImplBase.java:83) 
    at android.support.v7.app.AppCompatDelegateImplV7.<init>(AppCompatDelegateImplV7.java:146) 
    at android.support.v7.app.AppCompatDelegateImplV11.<init>(AppCompatDelegateImplV11.java:28) 
    at android.support.v7.app.AppCompatDelegateImplV14.<init>(AppCompatDelegateImplV14.java:41) 
    at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:193) 
    at android.support.v7.app.AppCompatDelegate.create(AppCompatDelegate.java:173) 
    at android.support.v7.app.AppCompatActivity.getDelegate(AppCompatActivity.java:511) 
    at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:71) 
    at com.sample.test.views.MainActivity.onCreate(MainActivity.java:100) 
    at android.app.Activity.performCreate(Activity.java:5008) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) 
    at android.app.ActivityThread.access$600(ActivityThread.java:130) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) 
    at android.os.Handler.dispatchMessage(Handler.java:99) 
    at android.os.Looper.loop(Looper.java:137) 
    at android.app.ActivityThread.main(ActivityThread.java:4745) 
    at java.lang.reflect.Method.invokeNative(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:511) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
    at dalvik.system.NativeStart.main(Native Method)
```
