unity2018 package manager引入本地包Demo

unity2018 package manager引入本地包Demo，通过修改配置文件即可完成对本地包的导入，详见demo

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-10-23 13:58  PackageManager\
     目录           0  2018-10-23 13:40  PackageManager\Assets\
     目录           0  2018-10-23 13:40  PackageManager\Assets\Scenes\
     文件        6757  2018-09-17 16:42  PackageManager\Assets\Scenes\SampleScene.unity
     文件         155  2018-09-17 16:42  PackageManager\Assets\Scenes\SampleScene.unity.meta
     文件         172  2018-09-17 16:42  PackageManager\Assets\Scenes.meta
     目录           0  2018-10-23 13:58  PackageManager\Library\
     文件        4116  2018-10-23 13:40  PackageManager\Library\AnnotationManager
     文件          10  2018-10-23 13:40  PackageManager\Library\AssetImportState
     文件           0  2018-10-23 13:40  PackageManager\Library\BuildPlayer.prefs
     文件        4152  2018-10-23 13:40  PackageManager\Library\BuildSettings.asset
     文件       17578  2018-10-23 13:58  PackageManager\Library\CurrentLayout.dwlt
     文件        4720  2018-10-23 13:40  PackageManager\Library\EditorUserBuildSettings.asset
     文件        4156  2018-10-23 13:40  PackageManager\Library\EditorUserSettings.asset
     文件        4104  2018-10-23 13:40  PackageManager\Library\InspectorExpandedItems.asset
     文件          81  2018-10-23 13:58  PackageManager\Library\LastSceneManagerSetup.txt
     文件          65  2018-10-23 13:40  PackageManager\Library\LibraryFormatVersion.txt
     文件        4100  2018-10-23 13:40  PackageManager\Library\MonoManager.asset
     文件       18543  2018-10-23 13:40  PackageManager\Library\ProjectSettings.asset
     目录           0  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\
     文件          33  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\BuiltinAssemblies.stamp
     文件       80896  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\Unity.PackageManagerUI.Editor.dll
     文件       35978  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\Unity.PackageManagerUI.Editor.dll.mdb
     文件      190464  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\Unity.TextMeshPro.Editor.dll
     文件       59906  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\Unity.TextMeshPro.Editor.dll.mdb
     文件      344576  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\Unity.TextMeshPro.dll
     文件      133424  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\Unity.TextMeshPro.dll.mdb
     文件        4096  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\UnityEditor.StandardEvents.dll
     文件         407  2018-10-23 13:40  PackageManager\Library\scriptAssemblies\UnityEditor.StandardEvents.dll.mdb
     文件       12169  2018-10-23 13:40  PackageManager\Library\scriptMapper
     目录           0  2018-10-23 13:40  PackageManager\Library\ShaderCache\
............此处省略1346个文件信息