netlify: Add multiple users & passwords

Add placeholder users/passwords to netlify.toml that are replaced
by the environment variables stored in Netlify by running `netlify build`
or `netlify deploy --build`. Included instructions for deployment to
Netlify within the auspice README.

.gitignore

@@ -89,3 +89,6 @@ Thumbs.db
 # cluster log #
 ###############
 *.sh.*
+
+# Local Netlify folder
+.netlify

auspice/README.md

@@ -12,7 +12,12 @@ Website for visualizing and interacting with phylogenies produced augur pipeline
 
 ### Deployment
 
-Website is hosted on Amazon S3. Deploy with `s3_website push` from within the `auspice/` directory. This pushes the `_site/` directory to the specified S3 bucket. S3 credentials are stored in ENV as `S3_BUCKET`, `S3_KEY` and `S3_SECRET`. Environment variables can be updated locally without fear of committing private information.
+Website is hosted on [Netlify](https://www.netlify.com/).
+Use the [Netlify CLI](https://docs.netlify.com/cli/get-started/) to deploy the build by running:
+```
+netlify deploy --build --prod
+```
+__NOTE__: Be sure to include the `--build` option as this runs the build command within `netlify.toml` to replace the placeholder username and passwords with the environment variables set in Netlify.
 
 ### Local development
 

auspice/netlify.toml

@@ -1,7 +1,13 @@
 [build]
 	publish = "_site/"
+	command = "sed -i.bak \"s|USER1:PASSWORD1 USER2:PASSWORD2 USER3:PASSWORD3 USER4:PASSWORD4 USER5:PASSWORD5|${USER1}:${PASSWORD1} ${USER2}:${PASSWORD2} ${USER3}:${PASSWORD3} ${USER4}:${PASSWORD4} ${USER5}:${PASSWORD5}|g\" _site/netlify.toml && rm _site/netlify.toml.bak"
 
 [[redirects]]
 	from = "/"
 	to = "/who/"
 	force = true
+
+[[headers]]
+	for = "/*"
+	[headers.values]
+		Basic-Auth = "USER1:PASSWORD1 USER2:PASSWORD2 USER3:PASSWORD3 USER4:PASSWORD4 USER5:PASSWORD5"