Update .travis/build.sh: don't generate a sourcemap for pull requests for speed
Update .travis/build.sh: don't generate a sourcemap for pull requests for speed

Juko8/WoWAnalyzer,yajinni/WoWAnalyzer,yajinni/WoWAnalyzer,yajinni/WoWAnalyzer,ronaldpereira/WoWAnalyzer,anom0ly/WoWAnalyzer,sMteX/WoWAnalyzer,FaideWW/WoWAnalyzer,sMteX/WoWAnalyzer,ronaldpereira/WoWAnalyzer,WoWAnalyzer/WoWAnalyzer,Juko8/WoWAnalyzer,anom0ly/WoWAnalyzer,yajinni/WoWAnalyzer,anom0ly/WoWAnalyzer,sMteX/WoWAnalyzer,FaideWW/WoWAnalyzer,fyruna/WoWAnalyzer,Juko8/WoWAnalyzer,WoWAnalyzer/WoWAnalyzer,ronaldpereira/WoWAnalyzer,anom0ly/WoWAnalyzer,fyruna/WoWAnalyzer,WoWAnalyzer/WoWAnalyzer,FaideWW/WoWAnalyzer,fyruna/WoWAnalyzer