Hi,
As your income falls under category of professional income ,you can not claim this income under presumptive income under section 44ad (which i meant for business income) and you dont fall under the category of presumptive income of professionals. you can check if any of the category suits to the services provided by you. Below is the link-
http://taxguru.in/income-tax/section-44ada-presumptive-tax-scheme-professionals.html
So you can claim expenses incurred to earn this income and file ITR 4.
Below are mentioned some of the expenses-
Domain Hosting Expense, Domain Purchase Expense, Blog Designing Expense etc
Rent Expense
Electricity Expense/ Telephone Expense/ Internet Expense/ Water Expense
Salary to Employees
Payment to Freelance Consultants
Petrol/ Diesel Expenses
Any other expense incurred for the purpose of earning Revenue.