Update README for ECharts-powered visualizer

README.md

-# AMRDC Data Visualizer Embed
+# AMRDC Data Visualizer (powered by Apache ECharts)
 
-Continued development of the [`amrdcdata-visualizer`][original-repo] web
-app by Matthew Noojin.
+Dynamic, zoomable graph of hourly Automatic Weather Station (AWS) data,
+by year.
+Supports overlaying multiple years' and/or stations' data.
 
-Demonstration: https://amrc.ssec.wisc.edu/ograham/visualizer-embed/
-
-[original-repo]: https://github.com/mnooj/amrdcdata-visualizer
+Demonstration: <https://amrc.ssec.wisc.edu/ograham/visualizer-echarts/>
 
 
 
@@ -19,7 +18,7 @@ Demonstration: https://amrc.ssec.wisc.edu/ograham/visualizer-embed/
 Clone this repository to a directory outside of the Apache document
 root.
 
-> On `amrc`, it's cloned to `~ograham/visualizer-embed/`.
+> On `amrc`, it's cloned to `~ograham/visualizer-echarts/`.
 
 #### Install virtual environment
 
@@ -39,9 +38,9 @@ to the `htdocs` directory in this repository.
 The Apache configuration will have to allow such links outside of the
 document root, as well as all rules in `htdocs/.htaccess`.
 
-> On `amrc`, the web path is `/ograham/visualizer-embed/` and the
+> On `amrc`, the web path is `/ograham/visualizer-echarts/` and the
 > document root is `/data/web/amrc/htdocs`, so the linking command is
-> `ln -sT ~ograham/visualizer-embed/htdocs /data/web/amrc/htdocs/ograham/visualizer-embed`.
+> `ln -sT ~ograham/visualizer-echarts/htdocs /data/web/amrc/htdocs/ograham/visualizer-echarts`.
 
 
 ### As a Heroku app