Add gulp watch task
Add gulp watch task

Havi4/octotree,SampleLiao/octotree,tamdao/octotree,shiningguang/octotree,duylam/octotree,codevlabs/octotree,zhutaorun/octotree,tsdl2013/octotree,mikestaub/octotree,kidaa/octotree,guidiego/octotree,mikestaub/octotree,christer155/octotree,kidaa/octotree,duylam/octotree,JimiHFord/octotree,crashbell/octotree,likaiwalkman/octotree,FroggyStyle/octotree,shiningguang/octotree,tsdl2013/octotree,codevlabs/octotree,buunguyen/octotree,jamez14/octotree,Ephemera/octotree,ahlfors/octotree,likaiwalkman/octotree,treejames/octotree,JimiHFord/octotree,Ephemera/octotree,hexing-w/octotree,ldnguyen58/octotree,ahlfors/octotree,FroggyStyle/octotree,christer155/octotree,mdibaiee/octotree,Brightcells/octotree,Brightcells/octotree,crashbell/octotree,hexing-w/octotree,ldnguyen58/octotree,jamez14/octotree,Havi4/octotree,nntoan/octotree,SampleLiao/octotree,zhutaorun/octotree,guidiego/octotree,nntoan/octotree,treejames/octotree,buunguyen/octotree,tamdao/octotree,mdibaiee/octotree