[Plugin] print help after plugin installed.

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

lib/commands/plugin.js

@@ -76,13 +76,15 @@ function install(src) {
       else
         return parts[0];
     }).join(' ').trim();
-    if (deps.length === 0) return;
 
-    var cmd = 'npm install --save ' + deps;
-    log.debug(cmd);
-    require('child_process').execSync(cmd, {
-      cwd: path.resolve(__dirname, '../..')
-    });
+    if (deps.length > 0) {
+      var cmd = 'npm install --save ' + deps;
+      log.debug(cmd);
+      require('child_process').execSync(cmd, {
+        cwd: path.resolve(__dirname, '../..')
+      });
+    }
+    plugin.help();
   });
 }
 

lib/plugin.js

@@ -25,6 +25,8 @@ Plugin.prototype.setNext = function(next) {
   this.next = next;
 };
 
+Plugin.prototype.help = function() {};
+
 Plugin.plugins = [];
 
 Plugin.init = function(head) {