Enhance README with installation steps and requirements

Updated installation instructions and added requirements for running the vphone-aio script.

README.md

@@ -1,10 +1,14 @@
 # vphone-aio
 1 script run the vphone, already jailbroken with full bootstrap installed
 
-- download or clone full this repo
-- run the vphone-aio.sh script
-- wait
-- connect VNC
+- need brew and python3 íntalled and then `brew install git-lfs` to install git large files
+- disable SIP, set amfi_get_out_of_my_way=1
+- download or clone full this repo (it might take a while, for me 12GB takes me 20 minutes to finish)
+- run the `vphone-aio.sh` script
+- make sure your device is free more than 128GB (recommended)
+- wait until it merge, when merge is done, it will start extract the whole folder (about 15 minutes)
+- you can remove .git and the split file once it's merge done
+- connect VNC (using RealVNC or Screen sharing): `vnc://127.0.0.1:5901`
 - enjoy