add more paramters to filter

[dlutwuwei]

filters:{
               sub_reco: function (content, datapath) {
                    console.log(datapath)
                    data = require(datapath);
                    return swig.render(content, { 'locals': data.data });
                }
}

[coveralls]

Coverage increased (+0.03%) to 97.516% when pulling c64656a on dlutwuwei:patch-1 into ff678de on coderhaoxin:master.

[coveralls]

Coverage decreased (-0.6%) to 96.894% when pulling c64656a on dlutwuwei:patch-1 into ff678de on coderhaoxin:master.