Added SetNetworkActive rpc command

_includes/devdoc/bitcoin-core/rpcs/rpcs/setnetworkactive.md

@@ -0,0 +1,48 @@
+{% comment %}
+This file is licensed under the MIT License (MIT) available on
+http://opensource.org/licenses/MIT.
+{% endcomment %}
+{% assign filename="_includes/devdoc/bitcoin-core/rpcs/rpcs/setnetworkactive.md" %}
+
+##### SetNetworkActive
+{% include helpers/subhead-links.md %}
+
+{% assign summary_setNetworkActive="disables/enables all P2P network activity." %}
+
+{% autocrossref %}
+
+*Added in Bitcoin Core 0.14.0*
+
+The `setnetworkactive` RPC {{summary_setNetworkActive}}
+
+*Parameter #1---whether to disable or enable all P2P network activity*
+
+{% itemplate ntpd1 %}
+- n: "Activate"
+  t: "bool"
+  p: "Required<br>(exactly 1)"
+  d: "Set to `true` to enable all P2P network activity. Set to `false` to disable all P2P network activity"
+
+{% enditemplate %}
+
+*Result---`null` plus error on failed remove*
+
+{% itemplate ntpd1 %}
+- n: "`result`"
+  t: "null"
+  p: "Required<br>(exactly 1)"
+  d: "JSON `null`.  The JSON-RPC error field will be set only if you entered an invalid parameter"
+
+{% enditemplate %}
+
+*Examples from Bitcoin Core 0.14.1*
+
+{% highlight bash %}
+bitcoin-cli setnetworkactive true
+{% endhighlight %}
+
+Result (no output from `bitcoin-cli` because result is set to `null`).
+
+*See also*
+
+{% endautocrossref %}