chore(package): update broccoli-less-single to version 0.6.2
chore(package): update broccoli-less-single to version 0.6.2

https://greenkeeper.io/
bustle/mobiledoc-kit,bustlelabs/mobiledoc-kit,bustle/mobiledoc-kit,atonse/mobiledoc-kit,mixonic/content-kit-editor,YoranBrondsema/mobiledoc-kit,bustlelabs/content-kit-editor,bustle/mobiledoc-kit,Hstry/mobiledoc-kit,YoranBrondsema/mobiledoc-kit,bustlelabs/mobiledoc-kit,atonse/mobiledoc-kit,bustlelabs/content-kit-editor,YoranBrondsema/mobiledoc-kit,Hstry/mobiledoc-kit,mixonic/content-kit-editor,bustlelabs/mobiledoc-kit,Hstry/mobiledoc-kit,bustle/mobiledoc-kit,atonse/mobiledoc-kit,mixonic/content-kit-editor,bustlelabs/content-kit-editor