update electron-builder, update README & Publishing docs

Publishing.md

@@ -4,35 +4,30 @@ Steps:
 - Update version in `package.json` and `app/package.json` (they must match!)
 - Build release:
     ```
-    npm run clean  // removes node_modules so they get rebuilt
-    npm install    // installs & builds node_modules
-    npm run pack   // bundles app code using webpack to bundle.js
-    rimraf dist
-    npm run dist   // this does the publish, must do it on each OS (Mac,Win,Linux)
+    npm run clean  # removes node_modules so they get rebuilt, does not remove 'dist' dir
+    npm install    # installs & builds node_modules
+    npm run pack   # bundles app code using webpack to bundle.js
+    rimraf dist    # delete previous dist products (optional)
+    npm run dist   # build the dist products, and publish, must do it on each OS (Mac,Win,Linux)
     ```
-- Make release on github (creates tag)
+    Note: must set GH_TOKEN for `npm run dist` to publish to github
+
+- Edit release on github (tag created by 'dist' above)
 - Write release notes (changelog)
-- Upload build artifacts
 - Publish release
 - Check release
     - Download each version, unzip / install / launch to test
 - Publish announcement
 
+#### Current build machines
+- Mac OS X 10.12.6 on Macbook Pro 2013
+- Windows 10 Pro (in VM)
+- Ubuntu 16.04 (in VM)
 
 
 
 #### random notes
-- Test out S3 artifact publishing by setting in package.json:
-    ```
-    "build": {
-      "publish": {
-        "provider": "s3",
-        "bucket": "blink1control2"
-      }
-    }
-    ```
-  and setting `AWS_ACCESS_KEY_ID` & `AWS_SECRET_ACCESS_KEY` environment variable in Travis and Appveyor environment settings
-- But for actual publishing, use github releases (default), which requires `GH_TOKEN` secure environment variable and:
+- For actual publishing, use github releases (default), which requires `GH_TOKEN` secure environment variable and:
     ```
     "build": {
       "publish": {

README.md

@@ -30,7 +30,7 @@ Or to emulate a production run:
 npm install        # installs all dependencies locally
 npm run webpack    # packs app, there will be some warnings, ignore
 npm run start      # starts the packaged app
-npm run dist       # create relocatable app and installer(s), in "dist" dir
+npm run dist:draft # create relocatable app and installer(s), in "dist" dir
 ```
 
 #### Linux:
@@ -51,11 +51,11 @@ Install the following pre-requisites:
 
 - libgnome-keyring-dev
 - icnsutils
-- graphicsmagick
 - xz-utils
 - rpm
 - bsdtar
 - libusb-1.0.0-dev
+- libudev-dev
 
 (see: https://github.com/electron-userland/electron-builder/issues/1407)
 

package.json

@@ -107,7 +107,7 @@
     "css-loader": "^0.24.0",
     "devtron": "^1.4.0",
     "electron": "^1.7.11",
-    "electron-builder": "19.46.9",
+    "electron-builder": "^19.56.0",
     "electron-builder-squirrel-windows": "19.33.0",
     "electron-publisher-s3": "^19.28.3",
     "file-loader": "^0.9.0",