New song format

Changed over the song parser and accompanying code to be inline with the new, as suggested in issue #28.

Author: rocketinventor

In Javascript/airgap.html

@@ -17,34 +17,34 @@
 		</br>
 		<input type="button" value="Play Song" onclick="start()"></br></br>
 		<textarea id="logs" style="width:70%;min-height:100px">Tested with Chrome at 1560Khz</textarea>
+		<p style="font-size:14px">Feel free to edit the code below or copy and paste any <em>valid</em> code.<br>Column one is time in <i>milliseconds</i>, and column two is <i>frequency</i>.</p>
 		<textarea id="tones" style="width:70%;min-height:200px">
-Feel free to edit the code below. Just make sure you keep to the format that it's in and have all of the punctuation.
-:beep frequency=2673 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2093 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2673 length=790;
-:beep frequency=2349 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2349 length=790;
-:beep frequency=2673 length=400;
-:beep frequency=3136 length=400;
-:beep frequency=3136 length=790;
-:beep frequency=2673 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2093 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2673 length=400;
-:beep frequency=2349 length=400;
-:beep frequency=2093 length=790;</textarea>
+400 2673
+400 2349
+400 2093
+400 2349
+400 2673
+400 2673
+790 2673
+400 2349
+400 2349
+790 2349
+400 2673
+400 3136
+790 3136
+400 2673
+400 2349
+400 2093
+400 2349
+400 2673
+400 2673
+400 2673
+400 2673
+400 2349
+400 2349
+400 2673
+400 2349
+790 2093</textarea>
 		<div style="font-size:14px">Ported by Yeo Quan Yang. Credits to the original author William Entriken @https://github.com/fulldecent</div><br/>
 		<div style="font-size:14px">Project site at <a href="https://github.com/fulldecent/system-bus-radio">https://github.com/fulldecent/system-bus-radio</a></div><br/>
 		<div style="font-size:14px">List of computers that work and what frequency to try at <a href="https://github.com/fulldecent/system-bus-radio/blob/master/TEST-DATA.tsv">https://github.com/fulldecent/system-bus-radio/blob/master/TEST-DATA.tsv</a></div>

In Javascript/airgap.js

@@ -28,23 +28,18 @@ function square_am_signal(time, freq) {
 }
 
 function start() {
-	var song = document.getElementById("tones").value.split(":");
+	var song = document.getElementById("tones").value.split("\n");
 	var length = song.length;
-	var i = 1,
-		line, time, freq;
-	while (1 <= length) {
+	var line, time, freq;
+	for (var i = 0; i < length; i++) {
 		line = song[i].split(" ");
-		if (line[0] == "beep") {
-			freq = +line[0].split("=")[1];
-			time = +line[2].split("=")[1].slice(0, -1);
-			square_am_signal(time, freq);
-		}
-		if (line[0] == "delay") {
+		if (line[1] == "0") {
 			// delay
 		}
-		if (song[i] == "end") {
-			i = 1;
+		else {
+			freq = +line[1];
+			time = +line[0];
+			square_am_signal(time, freq);
 		}
-		i++;
 	}
 }