Merge pull request #397 from arangodb/documentation/supported-version

Supported version - IBM Cloud 1.13

Author: lservini

README.md

@@ -39,6 +39,7 @@ covers individual newer features separately.
 | Pivotal PKS          | 1.11               | >= 3.3.13        |                               | Runs  | Yes              |                       |
 | IBM Cloud            | 1.11               | >= 3.4.5         |          >= 0.3.11            | Runs  | Yes              |                       |
 | IBM Cloud            | 1.12               | >= 3.4.5         |          >= 0.3.11            | Runs  | Yes              |                       |
+| IBM Cloud            | 1.13               | >= 3.4.6.1       |          >= 0.3.11            | Runs  | Yes              |                       |
 | Amazon & Kops        | 1.10               | >= 3.3.13        |                               | Runs  | No               |                       |
 | Azure AKS            | 1.10               | >= 3.3.13        |                               | Runs  | No               |                       |
 | OpenShift            | 1.10               | >= 3.3.13        |                               | Runs  | No               |                       |