Add emanote run command to docs script

Author: srid

docs.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env sh
+
+if [ -z "$1" ]; then
+  nix run github:srid/emanote -- -L ./doc
+else
+  # Renders the docs, prints the location of the docs, opens the docs if possible
+  #
+  # Does not run the link checker. That's done in runtest.sh.
+  nix --option sandbox false \
+      build ${OVERRIDE_HASKELL_FLAKE} \
+      -L --show-trace \
+      github:hercules-ci/flake.parts-website \
+      "$@"
+
+  DOCSHTML="$PWD/result/options/haskell-flake.html"
+
+  echo "Docs rendered to $DOCSHTML"
+
+  if [ "$(uname)" == "Darwin" ]; then
+    open $DOCSHTML
+  else 
+    if type xdg-open &>/dev/null; then
+      xdg-open $DOCSHTML
+    fi
+  fi
+
+fi