Introducing an HTTP JSON API

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diff --git a/api/routes/showNSEntriesFile/index.js b/api/routes/showNSEntriesFile/index.js
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+++ b/api/routes/showNSEntriesFile/index.js
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+const fs = require('fs');
+const config = require('../../config');
+
+/*
+ * Reads ./szch file where the zchains with their
+ * zlatest's are saved.
+ *
+ * Returns:
+ *     - the file, it's already in JSON format.
+ *
+ */
+module.exports = (req, res) => {
+    var data = JSON.parse(fs.readFileSync(config.pairsFile));
+    res.send(data);
+};
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