feat: add support for vanity imports

diff --git a/docs/cli/README b/docs/cli/README
new file mode 100644
index 0000000..08ae0c9
--- /dev/null
+++ b/docs/cli/README

@@ -0,0 +1,4 @@
+This directory is just here to support our vanity URLs.
+
+When a user (or their editor) runs `go get aspect.build/cli` it will request the
+index.html in this folder, telling it to get the actual sources from github.

diff --git a/docs/cli/index.html b/docs/cli/index.html
new file mode 100644
index 0000000..c5b05d0
--- /dev/null
+++ b/docs/cli/index.html

@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>aspect.build/cli</title>
+    <meta
+      name="go-import"
+      content="aspect.build/cli git https://github.com/aspect-dev/aspect-cli"
+    />
+    <meta
+      name="go-source"
+      content="aspect.build/cli https://github.com/aspect-dev/aspect-cli https://github.com/aspect-dev/aspect-cli/tree/master{/dir} https://github.com/aspect-dev/aspect-cli/blob/master{/dir}/{file}#L{line}"
+    />
+    <style>
+      * {
+        font-family: sans-serif;
+      }
+      body {
+        margin-top: 0;
+      }
+      .content {
+        display: inline-block;
+      }
+      code {
+        display: block;
+        font-family: monospace;
+        font-size: 1em;
+        background-color: #d5d5d5;
+        padding: 1em;
+        margin-bottom: 16px;
+      }
+      ul {
+        margin-top: 16px;
+        margin-bottom: 16px;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="content">
+      <h2>aspect.build/cli</h2>
+      <code>go get aspect.build/cli</code>
+      <code>import "aspect.build/cli"</code>
+      Home:
+      <a href="https://godoc.org/aspect.build/cli"
+        >https://godoc.org/aspect.build/cli</a
+      ><br />
+      Source:
+      <a href="https://github.com/aspect-dev/aspect-cli"
+        >https://github.com/aspect-dev/aspect-cli</a
+      ><br />
+    </div>
+  </body>
+</html>