added composer file
added composer file

hjue/JustWriting,jockchou/JustWriting,jockchou/JustWriting,moqiguzhu/JustWriting,hjue/JustWriting,xiaotianhu/JustWriting,moqiguzhu/JustWriting,beealone/JustWriting,Keystion/JustWriting,xiaotianhu/JustWriting,beealone/JustWriting,moqiguzhu/JustWriting,jockchou/JustWriting,hjue/JustWriting,Keystion/JustWriting,xiaotianhu/JustWriting,beealone/JustWriting