build: fix inconsistencies with .npmignore

.npmignore

@@ -3,10 +3,15 @@
 /*
 # Except this files/folders
 !.editorconfig
+!.gitignore
+!.npmignore
+!docs
+!lib
 !LICENSE
 !package.json
 !package-lock.json
 !README.md
 !scripts
+!templates
 !tsconfig.json
 !tslint.json

src/configuration.ts

@@ -6,7 +6,7 @@ import {join} from 'path';
 export const NEEDED_FILES = [
   '.editorconfig',
   '.gitignore',
-  '.npmignore',
+  join('templates', '.npmignore'),
   join('templates', 'tsconfig.json'),
   join('templates', 'tslint.json'),
 ];

templates/.npmignore

@@ -0,0 +1,12 @@
+# Ignore all files/folders by default
+# See https://stackoverflow.com/a/29932318
+/*
+# Except this files/folders
+!docs
+!lib
+!LICENSE
+!package.json
+!package-lock.json
+!README.md
+!tsconfig.json
+!tslint.json