[#1] Add examples

Signed-off-by: Ivan Pchelintsev <i.pchelintsev@yadro.com>

README.md

@@ -16,3 +16,65 @@ cat <path_to_your_wallet> | jq .accounts[0].address | tr -d '"'
 neo-go wallet export -w <path_to_your_wallet> -d <address_from_p1>
 ```
 
+## Example usage
+
+### Container
+
+```csharp
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Enums;
+using FrostFS.SDK.ModelsV2.Netmap;
+
+var fsClient = new Client(<your_key>, <your_host>);
+
+// List containers
+var containersIds = await fsClient.ListContainersAsync();
+
+// Create container
+var placementPolicy = new PlacementPolicy(true, new Replica(1));
+var containerId = await fsClient.CreateContainerAsync(
+    new Container(
+        BasicAcl.PublicRW, 
+        placementPolicy
+    )
+);
+
+// Get container
+var container = await fsClient.GetContainerAsync(cId);
+
+// Delete container
+await fsClient.DeleteContainerAsync(containerId);
+```
+
+### Object
+
+```csharp
+using FrostFS.SDK.ClientV2;
+using FrostFS.SDK.ModelsV2;
+using FrostFS.SDK.ModelsV2.Enums;
+using FrostFS.SDK.ModelsV2.Netmap;
+
+var fsClient = new Client(<your_key>, <your_host>);
+
+// Search regular objects
+var objectsIds = await fsClient.SearchObjectAsync(
+    cId, 
+    ObjectFilter.RootFilter()
+);
+
+// Put object
+var f = File.OpenRead("cat.jpg");
+var cat = new ObjectHeader(
+    containerId: cId,
+    type: ObjectType.Regular,
+    new ObjectAttribute("Filename", "cat.jpg")
+);
+var oId = await fsClient.PutObjectAsync(cat, f);
+
+// Get object header
+var objHeader = await fsClient.GetObjectHeadAsync(cId, oId);
+
+// Get object
+var obj = await fsClient.GetObjectAsync(cId, oId);
+```