added url to twitter's docs
added url to twitter's docs

gnusocial/mainline,faulteh/gnu-social,eXcomm/gnu-social,bankonme/gnu-social,bankonme/gnu-social,charnimda/lgbtpzn-social,zh/statusnet,foocorp/gnu-social,zcopley/StatusNet,minmb/statusnet,minmb/statusnet,brion/StatusNet,d3vgru/StatusNet,d3vgru/StatusNet,furtherfield/gnu-social,faulteh/gnu-social,xebia/statusnet-oauth2,eXcomm/gnu-social,faulteh/gnu-social,shashi/StatusNet,Piratas/tortuga,znarf/statusnet-ladistribution,charnimda/lgbtpzn-social,zh/statusnet,charnimda/lgbtpzn-social,zcopley/zcopleys-statusnet-clone,minmb/statusnet,csarven/statusnet,gnusocial/mainline,studio666/gnu-social,chimo/social,shashi/StatusNet,charlycoste/StatusNet,furtherfield/gnu-social,xebia/statusnet-oauth2,foocorp/gnu-social,studio666/gnu-social,shashi/StatusNet,faulteh/gnu-social,charlycoste/StatusNet,csarven/statusnet,d3vgru/StatusNet,UngPirat/freesocial,brion/StatusNet,Piratas/tortuga,zcopley/StatusNet,UngPirat/freesocial,eXcomm/gnu-social,zcopley/StatusNet,Piratas/tortuga,znarf/statusnet-ladistribution,zcopley/zcopleys-statusnet-clone,Piratas/tortuga,furtherfield/gnu-social,zh/statusnet,sikevux/bsk-social,UngPirat/freesocial,charlycoste/StatusNet,studio666/gnu-social,sikevux/bsk-social,xebia/statusnet-oauth2,eXcomm/gnu-social,foocorp/gnu-social,gnusocial/mainline,csarven/statusnet,brion/StatusNet,furtherfield/gnu-social,chimo/social,gnusocial/mainline,zcopley/zcopleys-statusnet-clone,sikevux/bsk-social,sikevux/bsk-social,bankonme/gnu-social,csarven/statusnet,bankonme/gnu-social,znarf/statusnet-ladistribution,chimo/social,studio666/gnu-social