Make sure to normalize points for metric.send

fixes #20

lib/api/metric.js

@@ -38,6 +38,22 @@ function send(metric, points, extra, callback){
         callback = extra;
         extra = {};
     }
+    // Try to normalize `points`
+    // DEV: We need `points` to be an array of arrays regardless of what they give us
+    // Always wrap points in an array, this way we will get:
+    //   500 => [500]
+    //   [<timestamp>, 500] => [[<timestamp>, 500]]
+    points = [points];
+    points = points.map(function(point){
+        // Make sure each point is an array, if not make array with current timestamp
+        //   500 => [<timestamp>, 500]
+        //   [<timestamp>, 500] => unchanged
+        if(!Array.isArray(point)){
+            var now = parseInt(new Date().getTime() / 1000);
+            point = [now, point];
+        }
+        return point;
+    });
 
     extra = extra || {};
     var series = [