Documentation: Fix calls for bin/plugin to be compatible with master

Original commit: elastic/x-pack-elasticsearch@e9ce3f401c

shield/dev-tools/esvm/readme.txt

@@ -19,7 +19,7 @@ Troubleshooting:
 - elasticsearch is installed under ~/.esvm/<version>
 - turn on debug in ~/.esvm/1.4.1/config/logging.yml
 - esvm --fresh will reinstall ES
-- plugins will not re-install, you can remove them manually by ~/.esvm/1.4.1/bin/plugin --remove shield
+- plugins will not re-install, you can remove them manually by ~/.esvm/1.4.1/bin/plugin remove shield
 - errors during startup will not show up.  If esvm fails startup look in ~/.esvm/1.4.1/logs/*
 
 

shield/docs/public/getting-started.asciidoc

@@ -9,18 +9,18 @@ node must be restarted after installation. Plan for a complete cluster restart b
 
 To install and run Shield:
 
-. Run `bin/plugin` -i from `ES_HOME` to install the license plugin.
+. Run `bin/plugin install` from `ES_HOME` to install the license plugin.
 +
 [source,shell]
 ----------------------------------------------------------
-bin/plugin -i elasticsearch/license/latest
+bin/plugin install elasticsearch/license/latest
 ----------------------------------------------------------
 
-. Run `bin/plugin -i` to install the Shield plugin.
+. Run `bin/plugin install` to install the Shield plugin.
 +
 [source,shell]
 ----------------------------------------------------------
-bin/plugin -i elasticsearch/shield/latest
+bin/plugin install elasticsearch/shield/latest
 ----------------------------------------------------------
 +
 NOTE: If you are using a <<deb-rpm-install, DEB/RPM distribution>> of Elasticsearch, you need to specify the configuration directory and run the installation with superuser permissions. To perform an offline installation, <<offline-install,download the Shield binaries>>.

shield/docs/public/installing-shield.asciidoc

@@ -65,7 +65,7 @@ Transfer the compressed file to your server, then install the plugin with the `b
 
 [source,shell]
 ----------------------------------------------------
-bin/plugin -i shield -u file://PATH_TO_ZIP_FILE <1>
+bin/plugin install shield -u file://PATH_TO_ZIP_FILE <1>
 ----------------------------------------------------
 <1> Absolute path to Shield plugin zip distribution file (e.g. `file:///path/to/file/shield-1.3.0.zip`,
     note the three slashes at the beginning)

shield/docs/public/release-notes.asciidoc

@@ -18,8 +18,8 @@ will be preserved and you do this with a rolling upgrade of Elasticsearch. On ea
 
 [source,shell]
 ---------------------------------------------------
-bin/plugin -r shield
-bin/plugin -i elasticsearch/shield/latest <1>
+bin/plugin remove shield
+bin/plugin install elasticsearch/shield/latest <1>
 ---------------------------------------------------
 <1> `latest` will install the latest version of Shield compatible with your version of Elasticsearch. A specific version,
 such as `1.1.0` can also be specified.

watcher/docs/getting-started.asciidoc

@@ -7,20 +7,20 @@ on nodes running Elasticsearch 1.5 or later.
 
 To install and run Watcher:
 
-. Run `bin/plugin -i` from `ES_HOME` to install the License plugin:
+. Run `bin/plugin install` from `ES_HOME` to install the License plugin:
 +
 [source,shell]
 ----------------------------------------------------------
-bin/plugin -i elasticsearch/license/latest
+bin/plugin install elasticsearch/license/latest
 ----------------------------------------------------------
 +
 NOTE:   You need to install the License and Watcher plugins on each node in your cluster. 
 
-. Run `bin/plugin -i` to install the Watcher plugin.
+. Run `bin/plugin install` to install the Watcher plugin.
 +
 [source,shell]
 ----------------------------------------------------------
-bin/plugin -i elasticsearch/watcher/latest
+bin/plugin install elasticsearch/watcher/latest
 ----------------------------------------------------------
 +
 NOTE:   If you are using a <<package-installation, DEB/RPM distribution>> of Elasticsearch, 

watcher/docs/installing-watcher.asciidoc

@@ -69,8 +69,8 @@ is slightly different. You need to install the License and Watcher plugins from
 [source,shell]
 ----------------------------------------------------------
 cd /usr/share/elasticsearch
-sudo bin/plugin -i elasticsearch/license/latest
-sudo bin/plugin -i  elasticsearch/watcher/latest
+sudo bin/plugin install elasticsearch/license/latest
+sudo bin/plugin install elasticsearch/watcher/latest
 ----------------------------------------------------------
 
 [float]
@@ -89,7 +89,7 @@ https://download.elastic.co/elasticsearch/watcher/watcher-1.0.0.zip].
 
 [source,shell]
 ----------------------------------------------------------
-bin/plugin -i watcher -u file://<path_to_zip_file>
+bin/plugin install watcher -u file://<path_to_zip_file>
 ----------------------------------------------------------
 
 

watcher/docs/release-notes.asciidoc

@@ -27,7 +27,7 @@ upgrade:
 +
 [source,yaml]
 --------------------------------------------------
-bin/plugin -r watcher
+bin/plugin remove watcher
 --------------------------------------------------
 
 4. Restart Elasticsearch on each node.