Bump React@15.3.0
Bump React@15.3.0

codeforamerica/streetmix,kodujdlapolski/streetmix,kodujdlapolski/streetmix,codeforamerica/streetmix,kodujdlapolski/streetmix,magul/streetmix,magul/streetmix,codeforamerica/streetmix,magul/streetmix