diff --git a/.idea/workspace.xml b/.idea/workspace.xml
deleted file mode 100644
index d15e58f..0000000
--- a/.idea/workspace.xml
+++ /dev/null
@@ -1,64 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="AutoImportSettings">
-    <option name="autoReloadType" value="ALL" />
-  </component>
-  <component name="ChangeListManager">
-    <list default="true" id="0ebeae85-e05b-4bf1-84d1-35487e0b90f1" name="Changes" comment="" />
-    <option name="SHOW_DIALOG" value="false" />
-    <option name="HIGHLIGHT_CONFLICTS" value="true" />
-    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
-    <option name="LAST_RESOLUTION" value="IGNORE" />
-  </component>
-  <component name="FileTemplateManagerImpl">
-    <option name="RECENT_TEMPLATES">
-      <list>
-        <option value="Go File" />
-      </list>
-    </option>
-  </component>
-  <component name="GOROOT" url="file:///usr/lib/golang" />
-  <component name="ProjectColorInfo"><![CDATA[{
-  "associatedIndex": 3
-}]]></component>
-  <component name="ProjectId" id="2j9jW0f2prW23vp9lEUnMrEIBQJ" />
-  <component name="ProjectViewState">
-    <option name="hideEmptyMiddlePackages" value="true" />
-    <option name="showLibraryContents" value="true" />
-  </component>
-  <component name="PropertiesComponent"><![CDATA[{
-  "keyToString": {
-    "DefaultGoTemplateProperty": "Go File",
-    "RunOnceActivity.ShowReadmeOnStart": "true",
-    "RunOnceActivity.go.formatter.settings.were.checked": "true",
-    "RunOnceActivity.go.migrated.go.modules.settings": "true",
-    "RunOnceActivity.go.modules.go.list.on.any.changes.was.set": "true",
-    "go.import.settings.migrated": "true",
-    "go.sdk.automatically.set": "true",
-    "last_opened_file_path": "/home/liqing/Projects/programs/burgerbackup",
-    "node.js.detected.package.eslint": "true",
-    "node.js.selected.package.eslint": "(autodetect)",
-    "nodejs_package_manager_path": "npm"
-  }
-}]]></component>
-  <component name="RecentsManager">
-    <key name="MoveFile.RECENT_KEYS">
-      <recent name="$PROJECT_DIR$/bin/server" />
-    </key>
-  </component>
-  <component name="SharedIndexes">
-    <attachedChunks>
-      <set>
-        <option value="bundled-gosdk-33c477a475b1-e0158606a674-org.jetbrains.plugins.go.sharedIndexes.bundled-GO-241.18034.61" />
-        <option value="bundled-js-predefined-1d06a55b98c1-0b3e54e931b4-JavaScript-GO-241.18034.61" />
-      </set>
-    </attachedChunks>
-  </component>
-  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
-  <component name="TypeScriptGeneratedFilesManager">
-    <option name="version" value="3" />
-  </component>
-  <component name="VgoProject">
-    <settings-migrated>true</settings-migrated>
-  </component>
-</project>
\ No newline at end of file