share settings, UI adjust

Pixiview.iOS/Info.plist

@@ -21,7 +21,7 @@
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
 	<key>MinimumOSVersion</key>
-	<string>11.0</string>
+	<string>13.0</string>
 	<key>CFBundleDisplayName</key>
 	<string>Pixiview</string>
 	<key>CFBundleIdentifier</key>
@@ -46,5 +46,9 @@
 	<string>UIStatusBarStyleDefault</string>
 	<key>NSPhotoLibraryUsageDescription</key>
 	<string>需要访问您的图片库</string>
+	<key>LSSupportsOpeningDocumentsInPlace</key>
+	<true/>
+	<key>UIFileSharingEnabled</key>
+	<true/>
 </dict>
 </plist>