Update docs: Node.js and npm version

HOWTO_RELEASE

@@ -1,12 +1,9 @@
 1. Test (make clean all check), fix if broken before proceeding
-2. Ensure proper version in package.json
+2. Ensure proper version in package.json and package-lock.json
 3. Ensure NEWS section exists for the new version, review it, add release date
-4. Drop npm-shrinkwrap.json
+4. Commit package.json, npm-shrinwrap.json, NEWS
-5. Run npm shrinkwrap to recreate npm-shrinkwrap.json
+5. git tag -a Major.Minor.Patch # use NEWS section as content
-6. Commit package.json, npm-shrinwrap.json, NEWS
+6. Stub NEWS/package for next version
-7. git tag -a Major.Minor.Patch # use NEWS section as content
-8. Announce on cartodb@googlegroups.com
-9. Stub NEWS/package for next version
 
 Versions:
 

NEWS.md

@@ -3,6 +3,9 @@
 ## 2.3.2
 Released 2018-mm-dd
 
+Announcements:
+ * Update docs: compatible Node.js and npm versions
+
 
 ## 2.3.1
 Released 2018-12-23

README.md

@@ -11,19 +11,27 @@ Provides a node.js based API for running SQL queries against CartoDB.
 
 core requirements
 -----------------
+* Node >= 10.14.2 or 6.9.2
+* npm >= 6.4.1 || 3.10.9 || 3.10.10
 * Postgres `9.3+`.
 * Postgis `2.2`.
 * [CartoDB Postgres Extension](https://github.com/CartoDB/cartodb-postgresql/blob/0.19.2/README.md) `0.19+`.
 * GDAL `1.11.0` (bin utils). See [installing GDAL](http://trac.osgeo.org/gdal/wiki/DownloadingGdalBinaries)
 * zip commandline tool.
 * Redis `3`, recommended reversion `3.0.2`.
-* Node.js `6`, recommended reversion `6.9.2`.
-* npm `3`, recommended version `3.10.9`.
 
 
 Install dependencies
 --------------------
 
+- Node.js >= 10.14.2:
+```
+$ mv npm-shrinkwrap.json npm-shrinkwrap.json.backup
+$ npm ci
+$ mv npm-shrinkwrap.json.backup npm-shrinkwrap.json
+```
+
+- Node.js 6.9.2:
 ```sh
 npm install
 ```

package.json

@@ -63,7 +63,7 @@
     "docker-bash": "./docker-bash.sh"
   },
   "engines": {
-    "node": ">= 4.5.0",
+    "node": "6.9.2 || >= 10.14.2",
-    "npm": ">=1.2.1"
+    "npm": "3.10.9 || 3.10.10 || >= 6.4.1"
   }
 }