add structure

ts/index.ts

@@ -1,5 +1,7 @@
 /// <reference path="./typings/main.d.ts" />
 import plugins = require("./npmg.plugins");
+import install = require("./npmg.install");
 let npmg = {
-
-};
+    install: install
+};
+export = npmg;

ts/npmg.install.ts

@@ -1,15 +1,24 @@
 /// <reference path="./typings/main.d.ts" />
 import plugins = require("./npmg.plugins");
+import paths = require("./npmg.paths");
 let installExec = function(packageNames:string[]){
     for (let packageName in packageNames){
         plugins.shelljs.exec("npm install -g " + packageName);
     };
 };
 
-let defaultPackages = plugins.smartfile.readFileToObject("../default_packages.json");
+let packageLibrary = plugins.smartfile.readFileToObject(
+    plugins.path.join(paths.packageBase,"packageLibrary.json")
+);
 
-let install = function(){
-    installExec(defaultPackages);
+let install = function(packageSetArg:String){
+    switch (packageSetArg){
+        case "default":
+            installExec(packageLibrary.default);
+        default:
+            plugins.beautylog.warn("no set has been specified");
+    }
+    installExec(packageLibrary.default);
 };
 
 export = install;

ts/npmg.paths.ts

@@ -1,2 +1,6 @@
 /// <reference path="./typings/main.d.ts" />
-import paths = require("./npmg.paths");
+import plugins = require("./npmg.plugins");
+let paths = {
+    packageBase: plugins.path.join("__dirname","../")
+}
+export = paths;

ts/npmg.plugins.ts

@@ -1,3 +1,5 @@
 /// <reference path="./typings/main.d.ts" />
+export let beautylog = require("beautylog");
+export let path = require("path");
 export import shelljs = require("shelljs");
-export let smartfile = require("smartfile");
+export let smartfile = require("smartfile");