[Nutch Wiki] Update of "AboutPlugins" by ViksitGaur

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The following page has been changed by ViksitGaur:
http://wiki.apache.org/nutch/AboutPlugins

The comment on the change is:
Added a short note on pluginRepository

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  In order to get Nutch to use a given plugin, you need to edit your conf/nutch-site.xml file and add the name of the plugin to the list of plugin.includes.
  
+ == Using a Plugin From The Command Line ==
+ 
+ Nutch ships with a number of plugins that include a main() method, and sample code to illustrate their use. These plugins can be used from the command line - a good way to start exploring the internal workings of each plugin.
+ 
+ To do so, you need to use the bin/nutch script from the $NUTCH_HOME directory,
+ 
+ $ bin/nutch plugin
+ Usage: PluginRepository pluginId className [arg1 arg2 ...]
+ 
+ As an example, if you wanted to execute the parse-html plugin, 
+ 
+ $ bin/nutch plugin parse-html org.apache.nutch.parse.html.HtmlParser filename.html
+ 
+ The PluginRepository is the name of the plugin itself, and the pluginId is the fully qualified name of the plugin class.
+ 
+ 
  <<< See also: WritingPluginExample
  
  <<< See also: HowToContribute