Update readme and update changelog

Author: gnufied

CHANGELOG-0.1.0.md

@@ -0,0 +1,8 @@
+# v0.1.0
+
+## Initial release Changelog
+
+* Add a external resize controller which monitors Persistent volume claims and performs
+  CSI `ControllerExpandVolume` as needed. If plugin does not implement `ControllerExpandVolume` it performs a no-op expansion
+  and updates PV object.
+

README.md

@@ -3,6 +3,21 @@
 This is an external Kubernetes controller which can expand volumes using CSI volume Drivers. It's under heavy development
 and of alpha quality.
 
+# Build
+
+
+```bash
+make csi-resizer
+```
+
+# Running external resizer
+
+## With mock driver
+
+```bash
+./bin/csi-resizer --kubeconfig /var/run/kubernetes/admin.kubeconfig --csi-address /var/lib/kubelet/plugins/csi-mock/csi.sock
+```
+
 ## Community, discussion, contribution, and support
 
 Learn how to engage with the Kubernetes community on the [community page](http://kubernetes.io/community/).