Customize jQuery On-Screen Keyboard

Question

I need to display a virtual keyboard in some pages on my web-app, so I found this beautiful jQuery On-Screen Keyboard:You can download it from Github: https://github.com/sdeering/onscreenkeyboard/archive/master.zip

I need help to customize it, initially I thought that change CSS will do but turn out it need to be changed on some Jquery functions, I tried removing and changing the order of some functions but didn't work, I dont know Jquery so I am stuck.

For example here are some modifications I need to archive:

• Display upper key by default (right now it displays lower key) and don't give them the option key to turn on lower key.
• Remove Enter key

Can someone help me to figure out those 2 modifications above and give a brief explanation so I can get started and understand how to customize a key, I need a lot of modifications.