adds README for using /docs folder and updates web index with links to cheatsheet, avaa

Author: ablwr

docs/README.md

@@ -0,0 +1,11 @@
+# View documentation online
+
+## [http://bavc.github.io/qctools/](http://bavc.github.io/qctools/)
+
+# View documentation locally
+
+* Clone this repository and open the directory
+* `cd docs/` folder
+* install [Jekyll](https://jekyllrb.com/) (`gem install jekyll bundler`)
+* `bundle install` to install necessary dependencies
+* `jekyll serve` (or `bundle exec jekyll serve`) to run the server

docs/index.md

@@ -1,9 +1,16 @@
 # QCTools Documentation
 
+## Mirror of documentation found within the QCTools GUI application:  
+
 * [How To Use](/qctools/how_to_use.html)
 * [Getting Started](/qctools/getting_started.html)
 * [Filter Descriptions](/qctools/filter_descriptions.html)
 * [Playback Filters](/qctools/playback_filters.html)
 * [Recording](/qctools/recording.html)
-* [Seattle Municipal Archives User Guide](https://github.com/bavc/qctools-documentation/tree/master/SeattleMunicipalArchives)
 * [SignalServer Integration](/qctools/signalserverintegration.html)
+
+## Supplemental, web-based documentation
+
+* [A/V Artifact Atlas](https://bavc.github.io/avaa/)
+* [QCTools Cheat Sheet](https://docs.google.com/document/d/1xat34KWmMwmz8lzXPUACItPdGFR_kBv43Vu6Qkeaov4)
+* [Seattle Municipal Archives User Guide](https://github.com/bavc/qctools-documentation/tree/master/SeattleMunicipalArchives)