Add npm, GitHub releases deployment to Travis

.gitignore

@@ -6,3 +6,5 @@ components/
 node_modules/
 coverage/
 build.js
+retext.js
+retext.min.js

.travis.yml

@@ -1,9 +1,25 @@
 language: node_js
-script: npm run-script test-travis
 node_js:
 - '0.10'
 - '0.11'
 - '0.12'
-- iojs
+- '4.0'
+- '5.0'
 after_script: npm install codecov.io && cat ./coverage/lcov.info | codecov
 sudo: false
+deploy:
+  - provider: npm
+    email: tituswormer@gmail.com
+    api_key:
+      secure: Fa+vEbSfe6rAa9nriEBOuTAE2yG2N7k3C2SFF7OB1NsRw76DLmBGLgKIaE5qu4/KnL0F0GS040L1oflg1xSIfuXw9eq1HN6yt9Bo7wz/dmg+Wsw9tiHsur1Wms4tOkI+zi/l7ZEEV2oM/0bLpMHYTXrJ94OYLi4slyD8ewn//zk=
+    on:
+      tags: true
+      node: '5.0'
+  - provider: releases
+    api_key:
+      secure: f+niXC+P5aOAOx9uBudo+Qs+s77yRnoWmCTaMYTWbrULYYO8vqT7wHEeXSk5oXyr9fyUUUNsB+XQdxxGfB8RvBVJNUMAGneaF/iSo8r9lINFJ825l97wPtDV4BT+kNGFXKP4l7Kxq33Ld3FH73n3GAKOW337RZp6/rGqfRaJ4t8=
+    file:
+      - "retext.js"
+      - "retext.min.js"
+    on:
+      tags: true

readme.md

@@ -29,7 +29,8 @@ npm install retext
 
 **retext** is also available for [bower](http://bower.io/#install-packages),
 and [duo](http://duojs.org/#getting-started), and as an AMD, CommonJS, and
-globals module, [uncompressed](retext.js) and [compressed](retext.min.js).
+globals module, [uncompressed and
+compressed](https://github.com/wooorm/retext/releases).
 
 ## Usage