Fixed install script (bis)

src/postinstall.js

@@ -1,18 +0,0 @@
-const fs = require('fs');
-const ncp = require('ncp').ncp;
-
-const pad0 = n => ('0'+n).substr(-2);
-
-const datetime = new Date();
-const dir = `./data/${datetime.getFullYear()}/${pad0(datetime.getMonth())}/${pad0(datetime.getDay())}/`;
-
-if (!fs.existsSync(dir)) {
-    fs.mkdirSync(dir, {recursive: true});
-}
-
-ncp('./sample_data/',dir, function(err){
-    if(err)
-        console.error(err);
-    else
-        console.log(`sample data copied to ${dir}`);
-});