update docs

Author: ptcong

README.md

@@ -91,7 +91,7 @@ and include the code on the top of your file:
     ChipVN_ClassLoader_Loader::registerAutoLoad();
 
 then
-### Upload to Picasa.
+### Upload to Picasa - ver 1
 To upload image to Picasa, you need to have some AlbumIds otherwise the image will be uploaded to _default_ album.
 To create new AlbumId faster, you may use echo `$uploader->addAlbum('testing 1');`
 
@@ -103,6 +103,36 @@ To create new AlbumId faster, you may use echo `$uploader->addAlbum('testing 1')
     echo $uploader->upload(getcwd(). '/test.jpg');
     // this plugin does not support transload image
 
+### Upload to Picasanew - ver 2 (use OAuth 2.0)
+To upload image to Picasanew, you need to have some AlbumIds otherwise the image will be uploaded to _default_ album.
+To create new AlbumId faster, you may use echo `$uploader->addAlbum('testing 1');`
+
+    $uploader = ChipVN_ImageUploader_Manager::make('Picasanew');
+    $uploader->login('your user name', ''); // we don't need password here
+    $uploader->setApi('Client ID'); // register in console.developers.google.com
+    $uploader->setSecret('Client secret');
+    // you can set upload to an albumId by array of albums or an album, system will get a random album to upload
+    //$uploader->setAlbumId(array('51652569125195125', '515124156195725'));
+    //$uploader->setAlbumId('51652569125195125');
+    if (!$uploader->hasValidToken()) {
+        $uploader->getOAuthToken('http://yourdomain.com/test.php');
+    }
+    echo $uploader->upload(getcwd(). '/test.jpg');
+    // this plugin does not support transload image
+
+### Upload to Flickr
+To upload image to Picasa, you need to have some AlbumIds otherwise the image will be uploaded to _default_ album.
+To create new AlbumId faster, you may use echo `$uploader->addAlbum('testing 1');`
+
+    $uploader = ChipVN_ImageUploader_Manager::make('Flickr');
+    $uploader->setApi('API key');
+    $uploader->setSecret('API secret');
+    $token = $uploader->getOAuthToken('http://yourdomain.com/test.php');
+    $uploader->setAccessToken($token['oauth_token'], $token['oauth_token_secret']);
+
+    echo $uploader->upload(getcwd(). '/test.jpg');
+    // this plugin does not support transload image
+
 ### Upload to Imageshack
 
     $uploader = ChipVN_ImageUploader_Manager::make('Imageshack');