Linux support

[sudhackar]

yishn/spotify-lyrics#3

diff --git a/index.js b/index.js
index a08e7dd..255fee1 100644
--- a/index.js
+++ b/index.js
@@ -12,7 +12,7 @@ var wintools;
 var spotifyWebHelperWinProcRegex;
 
 // Default port that Spotify Web Helper binds to.
-var DEFAULT_PORT = 4370;
+var DEFAULT_PORT = 4381;
 var DEFAULT_RETURN_ON = ['login', 'logout', 'play', 'pause', 'error', 'ap']
 var DEFAULT_RETURN_AFTER = 1
 var ORIGIN_HEADER = { 'Origin': 'https://open.spotify.com' }
@@ -155,7 +155,7 @@ function SpotifyWebHelper(opts) {
     var localPort = opts.port || DEFAULT_PORT;
 
     function generateSpotifyUrl(url) {
-        return util.format("https://%s:%d%s", generateRandomLocalHostName(), localPort, url)
+        return util.format("http://%s:%d%s", generateRandomLocalHostName(), localPort, url)
     }