gitsome: add page (#1214)

pages/common/gitsome.md

@@ -0,0 +1,28 @@
+# gitsome
+
+> A terminal-based interface for GitHub, accessed via the `gh` command.
+> It also provides menu-style autocomplete suggestions for `git` commands.
+
+- Enter the gitsome shell (optional), to enable autocompletion and interactive help for git (and gh) commands:
+
+`gitsome`
+
+- Setup GitHub integration with the current account:
+
+`gh configure`
+
+- List notifications for the current account (as would be seen in https://github.com/notifications):
+
+`gh notifications`
+
+- List the current account's starred repos, filtered by a given search string:
+
+`gh starred "{{python 3}}"`
+
+- View the recent activity feed of a given GitHub repository:
+
+`gh feed {{tldr-pages/tldr}}`
+
+- View the recent activity feed for a given GitHub user, using the default pager (e.g. `less`):
+
+`gh feed {{torvalds}} -p`