Go to Indian embassy and get attestation from there ,after that from expatriate affairs also.

then u need the following documents.
No objection certificate from the employer.
Salary certificate from the company.
6 months salary statement from the bank.(If u don't have don't worry.then labour contract is a must.)
labour contract.
ur and ur wife's passport copy.
attested copy of marriage certificate.
ur QID copy.
Fill up the application form and attach all these documents and submit it to the immigration office.