update getting started guide link
update getting started guide link

testcodefresh/grunt-contrib-watch,JimRobs/grunt-chokidar,chemoish/grunt-contrib-watch,AlexJeng/grunt-contrib-watch,whisklabs/grunt-contrib-watch,Ariel-Isaacm/grunt-contrib-watch,yuhualingfeng/grunt-contrib-watch,chrisirhc/grunt-incremental,Rebzie/grunt-contrib-watch,gruntjs/grunt-contrib-watch,mobify/grunt-contrib-watch,eddiemonge/grunt-contrib-watch