diff --git a/README.md b/README.md
index 41e706d..cf103d1 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,66 @@ Please run `dogapi --help` to see current usage documentation for the tool.
 
 Every api method available in `dogapi` is exposed via the cli tool.
 
+## Major changes from 1.x.x to 2.x.x
+We have updated major versions for this library due to a backwards incompatible change to the argument format for `dogapi.metric.send` and `dogapi.metric.send_all`.
+
+### dogapi.metric.send
+Previously in `1.x.x`:
+
+```javascript
+var now = parseInt(new Date().getTime() / 1000);
+dogapi.metric.send("metric.name", 50);
+dogapi.metric.send("metric.name", [now, 50]);
+```
+
+Now in `2.x.x`:
+
+```javascript
+var now = parseInt(new Date().getTime() / 1000);
+dogapi.metric.send("metric.name", 50);
+dogapi.metric.send("metric.name", [50, 100]);
+dogapi.metric.send("metric.name", [[now, 50]]);
+```
+
+### dogapi.metric.send_all
+Previously in `1.x.x`:
+
+```javascript
+var now = parseInt(new Date().getTime() / 1000);
+var metrics = [
+  {
+    metric: "metric.name",
+    points: [now, 50]
+  },
+  {
+    metric: "metric.name",
+    points: 50
+  }
+];
+dogapi.metric.send_all(metrics);
+```
+
+Now in `2.x.x`:
+
+```javascript
+var now = parseInt(new Date().getTime() / 1000);
+var metrics = [
+  {
+    metric: "metric.name",
+    points: [[now, 50]]
+  },
+  {
+    metric: "metric.name",
+    points: [50, 100]
+  },
+  {
+    metric: "metric.name",
+    points: 50
+  }
+];
+dogapi.metric.send_all(metrics);
+```
+
 ## License
 
 The MIT License (MIT)
diff --git a/index.html b/index.html
index c40f1ae..2ded8c3 100644
--- a/index.html
+++ b/index.html
@@ -618,8 +618,8 @@ dogapi.infrastructure.search("hosts:database", function(err, res){
 <dd><p>the metric name</p>
 </dd>
 <dt>points</dt>
-<dd><p>single datapoint or array of [timestamp, datapoint], if a single point
-is given &quot;now&quot; is used as the timestamp</p>
+<dd><p>a single data point (e.g. <code>50</code>), an array of data points (e.g. <code>[50, 100]</code>)
+or an array of <code>[timestamp, value]</code> elements (e.g. <code>[[now, 50], [now, 100]]</code>)</p>
 </dd>
 <dt>extra</dt>
 <dd><p><em>optional</em>, object which can contain the following keys</p>
@@ -644,8 +644,11 @@ dogapi.initialize(options);
 dogapi.metric.send(&quot;my.metric&quot;, 1000, function(err, results){
   console.dir(results);
 });
+dogapi.metric.send(&quot;my.metric&quot;, [500, 1000], function(err, results){
+  console.dir(results);
+});
 var now = parseInt(new Date().getTime() / 1000);
-dogapi.metric.send(&quot;my.metric&quot;, [now, 1000], function(err, results){
+dogapi.metric.send(&quot;my.metric&quot;, [[now, 1000]], function(err, results){
   console.dir(results);
 });
 </code></pre>
@@ -661,7 +664,7 @@ dogapi.metric.send(&quot;my.metric&quot;, [now, 1000], function(err, results){
 <dd><p>an array of metrics where each element is an object with the following keys</p>
 <ul>
 <li>metric: the name of the metric</li>
-<li>points: a single datapoint or an array of [timestamp, datapoint] (same as <code>dogapi.metric.send</code>)</li>
+<li>points: a single data point (e.g. <code>50</code>), an array of data points (e.g. <code>[50, 100]</code>) or an array of <code>[timestamp, value]</code> elements (e.g. <code>[[now, 50], [now, 100]]</code>)</li>
 <li>tags: an array of &quot;tag:value&quot;&#39;s</li>
 <li>host: the source hostname to use for the metrics</li>
 <li>metric_type: the type of metric to use (&quot;gauge&quot; or &quot;counter&quot;) [default: gauge]</li>
@@ -683,9 +686,13 @@ var now = parseInt(new Date().getTime() / 1000);
 var metrics = [
   {
     metric: &quot;my.metric&quot;,
-    points: [now, 1000],
+    points: [[now, 1000]],
     tags: [&quot;tag:value&quot;]
   },
+  {
+    metric: &quot;another.metric&quot;,
+    points: [50, 1000]
+  },
   {
     metric: &quot;another.metric&quot;,
     points: 1000