message: Updating readme.md to have network.json part of 2015-06split tag
diff: @@ -157,6 +157,7 @@ input-file:
  - Microsoft.Network/2015-06-15/checkDnsAvailability.json
  - Microsoft.Network/2015-06-15/expressRouteCircuit.json
  - Microsoft.Network/2015-06-15/loadBalancer.json
  +- Microsoft.Network/2015-06-15/network.json
  - Microsoft.Network/2015-06-15/networkInterface.json
  - Microsoft.Network/2015-06-15/networkSecurityGroup.json
  - Microsoft.Network/2015-06-15/publicIpAddress.json
  @@ -167,15 +168,6 @@ input-file:
  - Microsoft.Network/2015-06-15/vmssNetworkInterface.json
  ```
  -### Tag: package-2015-06
  -
  -These settings apply only when `--tag=package-2015-06` is specified on the command line.
  -
  -``` yaml $(tag) == 'package-2015-06'
  -input-file:
  -- Microsoft.Network/2015-06-15/network.json
  -```
  -
  ### Tag: package-2015-05-preview
  These settings apply only when `--tag=package-2015-05-preview` is specified on the command line.
  