Update README with some usage notes

Author: danwild

README.md

@@ -8,5 +8,25 @@ Contains a pre-packaged copy of [grib2json](https://github.com/cambecc/grib2json
 
 Data Vis demo here: http://danwild.github.io/wind-js-leaflet/
 
+Note that this is intended as a crude demonstration, not intended for production use.
+To get to production; you should improve upon this or build your own.
+
+## install, run:
+
+(assumes you have node and npm installed)
+
+```bash
+npm install
+npm start
+```
+
+## endpoints
+- */latest* returns the most up to date JSON data available
+- */nearest* returns JSON data nearest to requested
+	- $GET params:
+		- `timeIso` an ISO timestamp for temporal target
+		- `searchLimit` number of days to search beyond the timeIso (will search forwards/backwards)
+- */alive* health check url, returns simple message
+
 ## License
 MIT License (MIT)

app.js

@@ -15,13 +15,7 @@ var whitelist = [
 	'http://localhost:63342',
 	'http://localhost:3000',
 	'http://localhost:4000',
-	'http://danwild.github.io',
-	'http://portal.ereefs.info',
-	'http://52.65.8.160',
-	'http://oa-21-mel.it.csiro.au',
-	'https://oa-21-mel.it.csiro.au',
-	'http://52.65.28.172',
-	'http://lw.oznome.csiro.au:3000'
+	'http://danwild.github.io'
 ];
 
 var corsOptions = {