AppImage: missing update information

[Lanthanus]

Hi,
first I want to thank you for this awesome tool! I am currently switching from Windows to Linux (Manjaro) and the software I was missing the most was Everything Search.
Since this is the first time for me using an AppImage (installing from source didn't work for me) I tried the update functionality (I am already running v0.1.2.5) and got the following error:

"Could not find update information in AppImage:
/home/user/Applications/DawnlightSearch-0.1.2.5-x86_64_546d6d393e31d8c82a553b792bbce931.Appimage

The AppImage doesn't support updating. Please ask the authors to set update information for easy updating."

[chg-hou]

@Lanthanus Thanks for reporting. I have added the token required by linuxdeployqt to embed update information.