Update docs

HOWTO_RELEASE

@@ -1,8 +1,8 @@
 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. If there are modified dependencies in package.json, update them with `yarn upgrade {{package_name}}@{{version}}`
-5. Commit package.json, yarn.lock, NEWS
+4. If there are modified dependencies in package.json, update them with `npm upgrade {{package_name}}@{{version}}`
+5. Commit package.json, package-lock.json (or yarn.lock), NEWS
 6. git tag -a Major.Minor.Patch # use NEWS section as content
 7. Stub NEWS/package for next version
 

INSTALL.md

@@ -4,8 +4,8 @@
 Make sure that you have the requirements needed. These are
 
 - Core
-  - Node.js >=6.9.x
-  - yarn >=0.27.5 <1.0.0
+  - Node >= 10.14.2 or 6.9.2
+  - npm >= 6.4.1 or yarn >= 0.27.5
   - PostgreSQL >8.3.x, PostGIS >1.5.x
   - Redis >2.4.0 (http://www.redis.io)
   - Mapnik >3.x. See [Installing Mapnik](https://github.com/CartoDB/Windshaft#installing-mapnik).
@@ -42,12 +42,18 @@ psql -d template_postgis -c 'CREATE EXTENSION postgis;'
 
 To fetch and build all node-based dependencies, run:
 
+- Node.js >= 10.14.2:
+```shell
+npm ci
 ```
+
+- Node.js 6.9.2:
+```shell
 yarn
 ```
 
-Note that the ```yarn``` step will populate the node_modules/
+Note that the  ```npm``` (or ```yarn```) step will populate the node_modules/
 directory with modules, some of which being compiled on demand. If you
 happen to have startup errors you may need to force rebuilding those
 modules. At any time just wipe out the node_modules/ directory and run
-```yarn``` again.
+```npm``` again.

NEWS.md

@@ -3,6 +3,9 @@
 ## 6.5.2
 Released 2018-mm-dd
 
+Announcements:
+ - Update docs: compatible Node.js and npm versions
+
 
 ## 6.5.1
 Released 2018-12-26

README.md

@@ -31,8 +31,16 @@ Upgrading
 
 Checkout your commit/branch. If you need to reinstall dependencies (you can check [NEWS](NEWS.md)) do the following:
 
+- Node.js >= 10.14.2:
+```sh
+$ rm -rf node_modules
+$ npm install
 ```
-rm -rf node_modules; yarn
+
+- Node.js 6.9.2:
+```
+$ rm -rf node_modules
+$ yarn
 ```
 
 Run
@@ -75,6 +83,14 @@ to use `yarn link`. You can read more about it at [yarn-link: Symlink a package
 
 **Quick start**:
 
+- Node.js >= 10.14.2:
+```shell
+~/windshaft-directory $ npm ci
+~/windshaft-directory $ npm link
+~/windshaft-cartodb-directory $ npm link windshaft
+```
+
+- Node.js 6.9.2:
 ```shell
 ~/windshaft-directory $ yarn
 ~/windshaft-directory $ yarn link

package.json

@@ -70,7 +70,8 @@
     "docker-bash": "./docker-bash.sh"
   },
   "engines": {
-    "node": ">=6.9",
-    "yarn": ">=0.27.5 <1.0.0"
-  }
+    "node": "6.9.2 || >= 10.14.2",
+    "npm": "3.10.9 || 3.10.10 || >= 6.4.1",
+    "yarn": "0.27.5"
+}
 }