Task: Calculate the sentiment intensity or valence score of the tweet, which should be a real number between 0 (extremely negative) and 1 (extremely positive).
Tweet: Ok, it seems there is still hope in BSNL 🙂\nNow, BB speed is ok 🙂\nBut I won't thank and elate much lest it be gone again like before 😐🙂
Intensity score: 
0.538