Added NOTICE.
Added NOTICE.

chen0031/epic,sisirkoppaka/chalk,followyourheart/epic,langkilde/epic,HarishankarSomasundaram/epic,yinxusen/chalk,scalanlp/chalk,briantopping/epic,dlwh/epic,yinxusen/chalk,jovilius/epic,nkhuyu/epic,bitemyapp/epic,maxim-rabinovich/epic,scalanlp/chalk,langkilde/epic,sisirkoppaka/chalk