Tiger Global has invested in DealShare, a startup in India that has built an e-commerce platform for middle- and lower-income groups of consumers, just three months after the Indian firm concluded its previous $21 million Series C funding round. The New York-headquartered firm has led the $100 million Series D round in three-year-old social commerce startup DealShare, two people familiar with the matter told TechCrunch. Tiger Global declined to comment, and a founder of the Indian startup didn’t return an email sent on Sunday. Indian news outlet Entrackr reported Monday…