codova cmd to add plugin code example

Example 1: build cordova app command

$ cordova build
$ cordoav build --release

Example 2: cordova plugin command

cordova {plugin | plugins} [
    add <plugin-spec> [..] {--searchpath=<directory> | --noregistry | --link | --save | --force} |
    {remove | rm} {<pluginid> | <name>} --save |
    {list | ls} |
    save |
]