Docs: Added uninstall topics to Watcher & Shield. Closes elastic/elasticsearch#801.

Original commit: elastic/x-pack-elasticsearch@b990c64647

shield/docs/public/index.asciidoc

@@ -2,7 +2,7 @@
 
 = Shield Reference
 
-:ref: http://www.elastic.co/guide/en/elasticsearch/reference/current
+:ref: http://www.elastic.co/guide/en/elasticsearch/reference/2.0
 :ref-17: http://www.elastic.co/guide/en/elasticsearch/reference/1.7
 
 :version: 2.1.0

shield/docs/public/installing-shield.asciidoc

@@ -157,7 +157,21 @@ curl -XGET localhost:9200/_search -u tribe_user:tribe_user
 As for encrypted communication, the required settings are the same as described in <<securing-communications, Securing Communications with Encryption and IP Filtering>>,
 but need to be specified per tribe as we did for discovery settings above.
 
+[float]
+[[uninstalling-shield]]
+=== Uninstalling Shield
 
+IMPORTANT: Uninstalling Shield requires a {ref}/restart-upgrade.html[full cluster restart].
 
+To uninstall Shield:
 
+. Shut down Elasticsearch. 
 
+. Remove the Shield plugin from Elasticsearch:
++
+[source,shell]
+----------------------------------------------------------
+bin/plugin remove shield
+----------------------------------------------------------
+
+. Restart Elasticsearch.

watcher/docs/installing-watcher.asciidoc

@@ -101,4 +101,21 @@ https://download.elastic.co/elasticsearch/release/org/elasticsearch/plugin/watch
 bin/plugin install file:///path/to/file/license-2.0.0.zip <1>
 bin/plugin install file:///path/to/file/watcher-2.0.0.zip 
 ----------------------------------------------------------
-<1> Note that you must specify an absolute path to the zip file after the `file://` protocol.
+<1> Note that you must specify an absolute path to the zip file after the `file://` protocol.
+
+[float]
+[[uninstalling-watcher]]
+=== Uninstalling Watcher
+
+To uninstall Watcher:
+
+. Shut down Elasticsearch. 
+
+. Remove the Watcher plugin from Elasticsearch:
++
+[source,shell]
+----------------------------------------------------------
+bin/plugin remove watcher
+----------------------------------------------------------
+
+. Restart Elasticsearch.

watcher/docs/release-notes.asciidoc

@@ -45,13 +45,13 @@ bin/plugin remove watcher
 .Enhancement
 * Support for configuring a proxy in the webhook action, http input and configuring a default proxy (which is also used by the slack action), using the `watcher.http.proxy.host` and `watcher.http.proxy.port` settings.
 
-=======
-[float]
-==== 2.0.0
-
 .Bug fixes
 * Fixed an issue where the scheduler may get stuck during Watcher startup. This caused no watches to ever fire.
 
+
+[float]
+==== 2.0.0
+
 .Breaking Changes
 * The dynamic index names support has been removed and Elasticsearch's date math index names support should be used instead.
   The only difference between Watcher's dynamic index names support and Elasticsearch's date math index names support is