Publish to NPM

Authenticate with NPM via .npmrc and publish the package version + "-[git sha]".

Remove vm and vm.min.js, they'll be built before the package is published to NPM and available on installation. When installing from git, the build step will run on npm install.

.gitignore

@@ -9,3 +9,5 @@ npm-*
 /.nyc_output
 /coverage
 /dist.js
+/vm.js
+/vm.min.js

.npmignore

@@ -0,0 +1,2 @@
+/.nyc_output
+/coverage

.travis.yml

@@ -17,7 +17,9 @@ after_script:
     $RELEASE_BRANCHES =~ $TRAVIS_BRANCH &&
     $TRAVIS_PULL_REQUEST = "false"
   ]]; then
-    ./node_modules/.bin/gh-pages -x -r https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git -d playground -m "Travis build ${TRAVIS_BUILD_NUMBER}"
+    echo "//registry.npmjs.org/:_authToken=\${NPM_TOKEN}" > .npmrc
+    npm --no-git-tag-version version $(node -p -e "require('./package.json').version")-${TRAVIS_COMMIT:0:5}
+    npm publish
     git config --global user.email $(git log --pretty=format:"%ce" -n1)
     git config --global user.name $(git log --pretty=format:"%cn" -n1)
     ./node_modules/.bin/gh-pages -x -r https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git -d playground -m "Build for $(git log --pretty=format:%H)"

package.json

@@ -11,7 +11,7 @@
   },
   "main": "./dist.js",
   "scripts": {
-    "postinstall": "./node_modules/.bin/webpack",
+    "prepublish": "./node_modules/.bin/webpack --bail",
     "start": "webpack-dev-server --host 0.0.0.0 --content-base .",
     "test": "make test"
   },