Cleanup.

packages/htmlviewer-extension/.gitignore

@@ -1,5 +0,0 @@
-*.bundle.*
-lib/
-node_modules/
-*.egg-info/
-.ipynb_checkpoints

packages/htmlviewer-extension/README.md

@@ -1,3 +1,3 @@
 # @jupyterlab/htmlviewer-extension
 
-JupyterLab extension mimerenderer to render HTML files in IFrame Tab. This extension allows users to view rendered HTML by double-clicking on .html files in the file browser. Files are opened in a JupyterLab tab.
+An extension for JupyterLab which provides an entry point for the [@jupyterlab/htmlviewer](../htmlviewer) package.

packages/htmlviewer/README.md

@@ -0,0 +1,3 @@
+# @jupyterlab/htmlviewer
+
+A JupyterLab package which provides an HTML document viewer.