Support "+" / positive sign as well.
Support "+" / positive sign as well.

Updated regex to support positive sign in addition to a negative sign. The `sign` is assigned a value of 1 if the regex finds "+" in the beginning.
joelmheim/moment,Oire/moment,julionc/moment,OtkurBiz/moment,joelmheim/moment,calebcauthon/moment,calebcauthon/moment,joelmheim/moment,xkxx/moment,PKRoma/moment,OtkurBiz/moment,monoblaine/moment,PKRoma/moment,OtkurBiz/moment,Oire/moment,moment/moment,mj1856/moment,ze-pequeno/moment,julionc/moment,xkxx/moment,moment/moment,mj1856/moment,ze-pequeno/moment,monoblaine/moment,julionc/moment,moment/moment,PKRoma/moment,xkxx/moment,ze-pequeno/moment,Oire/moment,calebcauthon/moment,mj1856/moment