- Fix formatting, typos, and make the format cohesive.
- Move LICENSE to defacto spot and more prominent
- Move dependencies sections to be a sub-section of the Install section since it was a bit confusing as to why the dependencies were after the Install section.

update domains.csv

Erciyes University, New Configurations

Erciyes University configuration is updated.

Add nixnet.email

Add nixnet.email domains to domains.csv

extend list to also work for symlinked accounts

fix macro for sync all accounts

the macro for sync all accounts uses 'mbsync -a' command, which
failed to run for users who have moved their ~/.mbsyncrc somewhere
else.

we should use mw -Y instead, which can detect the MBSYNCRC env

Added e.email service

add mail server setting for Zhejiang University

Fix typo

Fix typo.

Fixed a typo in successful logon message

It was a bit confusing when it said "use `w -y user@example.com` to sync your mail"

Update domains.csv

Add qq,126,163 mail for Chinese users

Use POSIX-compliant read

Rewrite #520.
Using `read var?'prompt'` is wrong. It is ksh (and zsh) specific.
Using `read -p 'prompt' var` is also wrong. It is bash specific.
Since we cannot assume which sh is implemented,
we should write POSIX-compliant code.