build: set up and document build and release scripts

Since we have a build step now we must point the package.json file
reference to the dist folder and must explicitly list all files that we
want to be included in the npm tarball.

The initial idea was to prepare the contents of the final npm tarball
all in the dist directory (including a copy of the package.json) but
that turns out not to work particularly well with standard-version which
is used to manage the version numbers and changelog.

Unfortunately this change also required a small workaround to allow
local installation of the uuid module in the examples (see .local/).

Also instructions for relasing a new version have not yet been
documented which is finally done here.

Since we now explicitly list all files to be included in the tarball
through the files property of package.json we no longer need the
.npmignore file.

.local/README.md

@@ -0,0 +1,9 @@
+# Local Fake Module for Testing
+
+This is a local fake module for use in the [examples](../examples) and browser tests (that are
+based on the examples) where we reference the `uuid` module with a local `file:` path in the
+respective `package.json` files.
+
+We must ensure that the local module does not contain locally installed dev dependencies in a
+`node_modules` hence this "fake module" that just consists of symbolic links and imitates the final
+contents of the npm tarball.

.local/dist

@@ -0,0 +1 @@
+../dist

.local/package.json

@@ -0,0 +1 @@
+../package.json

CONTRIBUTING.md

@@ -0,0 +1,20 @@
+# Contributing
+
+Please feel free to file GitHub Issues or propose Pull Requests. We're always happy to discuss
+improvements to this library!
+
+## Testing
+
+```shell
+npm test
+```
+
+## Releasing
+
+Releases are supposed to be done from master, version bumping is automated through
+[`standard-version`](https://github.com/conventional-changelog/standard-version):
+
+```shell
+npm run release -- --dry-run  # verify output manually
+npm run release               # follow the instructions from the output of this command
+```

README.md

@@ -313,11 +313,5 @@ $ uuid v1
 
 Type `uuid --help` for usage details
 
-## Testing
-
-```shell
-npm test
-```
-
 ----
 Markdown generated from [README_js.md](README_js.md) by [![RunMD Logo](http://i.imgur.com/h0FVyzU.png)](https://github.com/broofa/runmd)

README_js.md

@@ -291,9 +291,3 @@ $ uuid v1
 ```
 
 Type `uuid --help` for usage details
-
-## Testing
-
-```shell
-npm test
-```

examples/browser-esmodules/package.json

@@ -7,6 +7,6 @@
     "start": "npm run build && npx http-server . -o"
   },
   "dependencies": {
-    "uuid": "file:../../dist"
+    "uuid": "file:../../.local"
   }
 }

examples/browser-rollup/package.json

@@ -7,7 +7,7 @@
     "start": "npm run build && npx http-server . -o"
   },
   "dependencies": {
-    "uuid": "file:../../dist"
+    "uuid": "file:../../.local"
   },
   "devDependencies": {
     "rollup": "^1.24.0",