add travis button to readme
add travis button to readme

DataFighter/Lasagne-tutorial,gabortakacs/Lasagne,ErnstHowie/Lasagne,mheilman/Lasagne,Richi91/nntools,ebattenberg/Lasagne,takacsg84/Lasagne,cancan101/Lasagne,MihailoIsakov/fishfish,dnuffer/Lasagne,rlkelly/Lasagne,kracwarlock/Lasagne,DeanChan/Lasagne