Adds addRangeFrom() method.

docs/04-functions.md

@@ -4,8 +4,7 @@
 
 On this page you will find the methods you can use in the query builder.
 
-* [from()](functions/from.md)
-or [fromBucket()](functions/fromBucket.md)
+* [from()](functions/from.md) or [fromBucket()](functions/fromBucket.md)
 * [fromMeasurement()](functions/fromMeasurement.md)
 * [addAggregateWindow()](functions/addAggregateWindow.md)
 * [addBottom()](functions/addBottom.md)
@@ -20,8 +19,7 @@ or [fromBucket()](functions/fromBucket.md)
 * [addMax()](functions/addMax.md)
 * [addMean()](functions/addMean.md)
 * [addMin()](functions/addMin.md)
-* [addRangeStart()](functions/addRangeStart.md)
-or [addRangeInBetween()](functions/addRangeInBetween.md)
+* [addRangeFrom()](functions/addRangeFrom.md) or [addRangeStart()](functions/addRangeStart.md) or [addRangeInBetween()](functions/addRangeInBetween.md)
 * [addReduce()](functions/addReduce.md)
 * [addSort()](functions/addSort.md)
 * [addSum()](functions/addSum.md)

docs/functions/addRangeFrom.md

@@ -0,0 +1,41 @@
+# Flux Query Builder Docs
+
+## Functions » addRangeFrom()
+
+### Parameters:
+
+<table>
+  <tbody>
+    <tr>
+      <th>Name</th>
+      <th>Required</th>
+      <th>Data type</th>
+      <th>Description</th>
+    </tr>
+    <tr>
+      <td>from</td>
+      <td>Yes</td>
+      <td>string</td>
+      <td>Relative duration.</td>
+    </tr>
+  </tbody>
+</table>
+
+
+### Example
+
+```php
+->addRangeFrom( '-1h' )
+```
+
+This will result in the following Flux function part:
+
+```
+|> range(
+  start: -1h
+)
+```
+
+### Extra resources
+
+* [Flux documentation](https://docs.influxdata.com/flux/v0.x/stdlib/universe/range/)