sync readme and help/index.md, updated online docs css, removed (hope…

…fully) unneeded files

Makefile

@@ -76,6 +76,7 @@ update-copyright:
 build-docs:
 	# rebuild online docs
 	python3 $(DOCS_REBUILD)
+	cd help/web && bundle add webrick && bundle update
 
 serve-docs:
 	cd help/web && bundle exec jekyll serve

help/index.md

@@ -1,7 +1,6 @@
 # Intro
 
-RetopoFlow is a suite of fun, sketch-based retopology tools for Blender from [Orange Turbine](https://orangeturbine.com).
-These tools automatically generates geometry which snap to your source objects as you draw on the surface.
+RetopoFlow is a suite of fun, sketch-based retopology tools for Blender from [Orange Turbine](https://orangeturbine.com) that generate geometry which snap to your high poly objects as you draw on the surface.
 
 This documentation covers the installation and usage of all tools included in the add-on.
 
@@ -75,7 +74,7 @@ If you have any issues with installing, please try the following steps:
 
 RetopoFlow 3 comes with a built-in updater.
 Once you've installed it the first time, simply check for updates using the RetopoFlow menu.
-If you need to update the add-on manually for any reason, please be sure to uninstall the old version and restart Blender before installing the new version. 
+If you need to update the add-on manually for any reason, please be sure to uninstall the old version and restart Blender before installing the new version.
 
 The RetopoFlow updater will keep all of your previous settings intact.
 If you need to update manually for whatever reason, you can also keep your preferences by copying the `RetopoFlow_keymaps.json` and `RetopoFlow_options.json` files from the previous version's folder before installation and pasting them into the new version's folder after installation.
@@ -102,4 +101,3 @@ Pull requests are welcome!
 If you'd like to contribute to the project then simply fork the repo, work on your changes, and then submit a pull request.
 We are quite strict on what we allow in, but all suggestions are welcome.
 If you're unsure what to contribute, then look at the [open issues](https://github.com/CGCookie/retopoflow/issues) for the current to-dos.
-