Merge pull request #114 from medic/mrjones-plip-patch-1

denote required node version in readme

README.md

@@ -7,6 +7,21 @@ The focus is specifically on CHT application data currently stored in CouchDB. I
 This version is built for medic/cht-core#3.0.0 and above. For replicating data from earlier versions, see the 2.0.x branch and associated tags.
 
 
+## Requirements
+
+### Node and npm
+
+You will need to install the following:
+
+- [Node.js](https://nodejs.org) 8.11.x up to  12.x.x. Must be an LTS release. LTS is designated with an even major version number.
+- [npm](https://npmjs.com/) 6.x.x above
+
+
+### Database setup
+
+couch2pg supports PostgreSQL 9.4 and greater. The user passed in the postgres url needs to have full creation rights on the given database.
+
+
 ## Installation Steps (if applicable)
 
 1. Clone repository