Added DTProgressHUD demo to travis building
Added DTProgressHUD demo to travis building

JasperYanky/DTFoundation,ywzw2013/DTFoundation,programming086/DTFoundation,JasperYanky/DTFoundation,Cocoanetics/DTFoundation,1yvT0s/DTFoundation,sbausis/DTFoundation,SanjoDeundiak/DTFoundation,vlondon/DTFoundation,nrcmedia/DTFoundation,devontech/DTFoundation,z8927623/DTFoundation,SanjoDeundiak/DTFoundation,ShengQiangLiu/DTFoundation