Update cheatsheets

flutter-pub

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# flutter pub
+
+> Flutter's package manager.
+> Note: Packages are available on <https://pub.dev>. See also: `flutter`.
+> More information: <https://docs.flutter.dev/packages-and-plugins/using-packages>.
+
+- Download/Update all packages specified in `pubspec.yaml`:
+
+`flutter pub get`
+
+- Add a package dependency to an app:
+
+`flutter pub add {{package1 package2 ...}}`
+
+- Remove a package dependency from an app:
+
+`flutter pub remove {{package1 package2 ...}}`
+
+- Upgrade to the highest version of a package that is allowed by `pubspec.yaml`:
+
+`flutter pub upgrade {{package}}`