Right now I cannot say for sure is bitcoin legal in India or not. Indian authorities made thing very complicated during past few days
As of now it is not illegal, as per the existing laws. But the government is somewhat hostile to crypto-currency trading within the country. They are not banning it, just because they know that it is not possible without shutting down the whole internet.
As per the RBI statement they want the country's people to stop dealing with the crypto currencies within three months so maybe after that bitcoin may be banned in India.But bitcoin trading is going to be hard there now because wothout ban's involving we can't do crypto trades and face to face transactions are impossible for everyone.