Do not build x86 appveyor
Do not build x86 appveyor

refs https://github.com/mapbox/tilelive-vector/pull/80#issuecomment-62213839
nyurik/kartotherian,nyurik/kartotherian,kartotherian/kartotherian,nyurik/kartotherian,kartotherian/kartotherian,kartotherian/kartotherian,kartotherian/kartotherian,nyurik/kartotherian,mapbox/tilelive-vector,nyurik/tilelive-vector,jaredbrookswhite/tilelive-vector