Steps to change icon and app name :
1) Download APKtool
2) decompile xdkhtml5test.android.crosswalk.arm.20140106171902.apk
run - apktool d <.apk file>
4) cd xdkhtml5test.android.crosswalk.arm.20140106171902
6) You can remove permissions in "AndroidManifest.xml".
5) cd res
6) make your icon.png file of 96x96 resolution
7) copy icon file in all drawable<-hdpi/-ldpi/-mdpi/-xhdpi> folders
8) cd values
9) open strings.xml in notepad and change "app_name" :
<string name="app_name"><your app name></string>
10) save file
11) recompile xdkhtml5test.android.crosswalk.arm.20140106171902.apk
run - apktool b xdkhtml5test.android.crosswalk.arm.20140106171902 xdkhtml5test.apk
12) Now sign the apk
java -jar signapk.jar testkey.x509.pem testkey.pk8 xdkhtml5test.apk xdkhtml5test.signed.apk
13) make sure to copy xdkhtml5test.signed.apk copy in "srcapk" folder
14) remove folder if any inside "srcapk"
15) make sure to keep only 1 .apk in "srcapk" folder
16) run go.bat