Added support for Listview.Separated (#26)

* Added support for ListView.separated

* Update README.md

Author: timilehinjegede

README.md

@@ -20,6 +20,7 @@ Awesome Flutter Snippets is a collection of commonly used Flutter classes and me
 | `customClipper`       | Custom Clipper           | Used for creating custom shapes                                                                                                                                                         |
 | `customPainter`       | Custom Painter           | Used for creating custom paint                                                                                                                                                          |
 | `listViewB`      | ListView.Builder         | Creates a scrollable, linear array of widgets that are created on demand.Providing a non-null `itemCount` improves the ability of the `ListView` to estimate the maximum scroll extent. |
+| `listViewS`    | ListView.Separated | Creates a fixed-length scrollable linear array of list 'items' separated by list item 'separators'. |
 | `customScrollV`      | Custom ScrollView        | Creates a `ScrollView` that creates custom scroll effects using slivers. If the `primary` argument is true, the `controller` must be null.                                              |
 | `streamBldr`      | Stream Builder           | Creates a new `StreamBuilder` that builds itself based on the latest snapshot of interaction with the specified `stream`                                                                |
 | `animatedBldr`    | Animated Builder         | Creates an Animated Builder. The widget specified to `child` is passed to the `builder`                                                                                                 |

snippets/snippets.json

@@ -143,6 +143,21 @@
         ],
         "description": "Creates a scrollable, linear array of widgets that are created on demand.Providing a non-null `itemCount` improves the ability of the [ListView] to estimate the maximum scroll extent."
     },
+    "ListView.Separated": {
+        "prefix": "listViewS",
+        "body": [
+            "ListView.separated(",
+            "  itemCount: ${1:1},",
+            "  separatorBuilder: (BuildContext context, int index) {",
+            "  return ${2:};",
+            " },",
+            "  itemBuilder: (BuildContext context, int index) {",
+            "  return ${3:};",
+            " },",
+            "),"
+        ],
+        "description": "Creates a fixed-length scrollable linear array of list 'items' separated by list item 'separators'."
+    },
     "Custom Scroll View": {
         "prefix": "customScrollV",
         "body": [