Merge pull request facebook#28 from ersin-ertan/patch-1

update 00-index for explicitness

docs/00-index.md

@@ -9,7 +9,7 @@ next: concepts.html
 
 If you just want to download an image and display it, showing a placeholder until it comes, use a [SimpleDraweeView](../javadoc/reference/com/facebook/drawee/view/SimpleDraweeView.html). 
 
-Near your application startup, initialize the classes:
+Near your application startup and before ```setContentView()```, initialize the Fresco class:
 
 ```java
 Fresco.initialize(context);
@@ -21,28 +21,34 @@ In your XML, add a custom namespace to the top-level element:
 <!-- Any valid element will do here -->
 <LinearLayout 
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:fresco="http://schemas.android.com/apk/res-auto">
+    xmlns:fresco="http://schemas.android.com/apk/res-auto"
+    android:layout_height="match_parent"
+	android:layout_width="match_parent">
 ```
 
-Then add the view itself:
+Then add the ```SimpleDraweeView``` to the layout:
 
 ```xml
 <com.facebook.drawee.view.SimpleDraweeView
     android:id="@+id/my_image_view"
-    android:layout_width="20dp"
-    android:layout_height="20dp"
+    android:layout_width="130dp"
+    android:layout_height="130dp"
     fresco:placeholderImage="@drawable/my_drawable"
   />
 ```
 
 To show an image, you need only do this:
 
 ```java
-draweeView.setImageURI("http://site.com/uri");
+SimpleDraweeView draweeView = (SimpleDraweeView)findViewById(R.id.my_image_view);
+draweeView.setImageURI("http://frescolib.org/static/fresco-logo.png");
 ```
-
-and Fresco does the rest. 
 
-The placeholder is shown until the image is ready. The image will be downloaded, cached, displayed, and cleared from memory when your view goes off-screen.
+add Android's internet permission to the AndroidManifest.xml
+```xml
+<uses-permission android:name="android.permission.INTERNET"/>
+```
 
+and Fresco does the rest. 
 
+The placeholder is shown until the image is ready. The image will be downloaded, cached, displayed, and cleared from memory when your view goes off-screen.