Info speed up (#130)

* feat(): rewrite info to be async.

* fix(): rewrite get info to make it async.

Author: jthoms1

lib/config.js

@@ -1,5 +1,7 @@
 var fs = require('fs');
 var path = require('path');
+var Utils = require('./utils');
+var Q = require('q');
 
 var home = process.env.HOME || process.env.USERPROFILE || process.env.HOMEPATH;
 
@@ -14,6 +16,16 @@ module.exports = {
     }
     return this;
   },
+  promiseLoad: function() {
+    var self = this;
+    self.file = self.CONFIG_FILE;
+    var readFile = Utils.promisify(fs.readFile);
+
+    return readFile(path.join(home, self.file)).then(function(jsonContents) {
+      self.data = jsonContents.toString();
+      return self;
+    });
+  },
   save: function() {
     if (!this.data) {
       return;
@@ -30,6 +42,24 @@ module.exports = {
       console.error('Unable to save settings file: ' + e);
     }
   },
+  promiseSave: function() {
+    if (!this.data) {
+      return Q.resolve();
+    }
+    var dirPath = path.join(home, path.dirname(this.CONFIG_FILE));
+    var filepath = path.join(dirPath, this.CONFIG_FILE);
+    var statFile = Utils.promisify(fs.stat);
+    var mkDir = Utils.promisify(fs.mkdir);
+    var jsonString = JSON.stringify(this.data, null, 2);
+
+    return statFile(dirPath).then(function(stat) {
+      return Utils.writeJsonContents(filepath, jsonString);
+    }, function() {
+      return mkDir(dirPath).then(function() {
+        return Utils.writeJsonContents(filepath, jsonString);
+      });
+    });
+  },
   get: function(k) {
     return this.data[k];
   },