fix bad path passed as a main file in the bower.json
fix bad path passed as a main file in the bower.json

onesfreedom/grunt-bower-concat,webdev1001/grunt-bower-concat,mathiber/grunt-bower-concat,webdev1001/grunt-bower-concat,webdev1001/grunt-bower-concat,webdev1001/grunt-bower-concat,sapegin/grunt-bower-concat,Keyes/grunt-bower-concat,mathiber/grunt-bower-concat,frontday/grunt-bower-concat,AuyaJackie/grunt-bower-concat,AuyaJackie/grunt-bower-concat,webdev1001/grunt-bower-concat,onesfreedom/grunt-bower-concat,mathiber/grunt-bower-concat,frontday/grunt-bower-concat,AuyaJackie/grunt-bower-concat,mathiber/grunt-bower-concat,mathiber/grunt-bower-concat,AuyaJackie/grunt-bower-concat,onesfreedom/grunt-bower-concat,alwin-rewedigital/grunt-bower-concat,Keyes/grunt-bower-concat,Keyes/grunt-bower-concat,Keyes/grunt-bower-concat,Keyes/grunt-bower-concat,onesfreedom/grunt-bower-concat,frontday/grunt-bower-concat,frontday/grunt-bower-concat,AuyaJackie/grunt-bower-concat,frontday/grunt-bower-concat,onesfreedom/grunt-bower-concat