diff --git a/.idea/caches/gradle_models.ser b/.idea/caches/gradle_models.ser
index 25c5e95..f934a54 100644
Binary files a/.idea/caches/gradle_models.ser and b/.idea/caches/gradle_models.ser differ
diff --git a/README.md b/README.md
index 135bd08..9211d43 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,11 @@
 # osu!player
-play music with hitsounds on android devices, inspired by [this project](https://github.com/Milkitic/Osu-Player)  
+play music with hitsounds on android devices, inspired by [this project](https://github.com/Milkitic/Osu-Player).  
 
-(only) tested on Galaxy S10+ (android p)
+(only) tested on Galaxy S10+ (android p)  
+<img src="https://file.blessingsoftware.cc/upload/Screenshot_20191002-193602_osu!%20Player.jpg" width="256">
 
 ## known issues
-* sliderticks wont be played. (idk how to calculate position of sliderticks
-* may incompatible with old osu file formats
-* many more bugs
+* sliderticks wont be played. (idk how to calculate screen position of them
+* maybe incompatible with old osu file formats.
+* low performance.
+* many many more bugs.
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 068d876..b524f86 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,5 +1,5 @@
 <resources>
-    <string name="app_name">osu! Player</string>
+    <string name="app_name">osu!player</string>
 
     <!-- TODO: Remove or change this placeholder text -->
     <string name="hello_blank_fragment">Hello blank fragment</string>