Added rules for a strong password

[RadheTians]

The set of rules is following. Fixes #83

• At least 8 characters—the more characters, the better
• A mixture of both uppercase and lowercase letters
• A mixture of letters and numbers
• Inclusion of at least one special character, e.g.,! @ # ? ]

[BLasan]

@RadheTians Shall we squash the two commits and send a PR containing only one commit ? @abhi40308 or else is it ok in this way?

[RadheTians]

@BLasan I think there is no need to create another PR, there is a single line change between PRs due to the syntax checker.

[BLasan]

@BLasan I think there is no need to create another PR, there is a single line change between PRs due to the syntax checker.

yuh, no need to create another PR. You can just merge the two commits you have done into one commit and force push again. If it's needed @abhi40308 otherwise no problem of having two commits