fix: write version to shrinkwrap if existent

Closes #11

README.md

@@ -6,11 +6,11 @@
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 [![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg?style=flat)](https://github.com/feross/standard)
 
-[![Dependency Status](https://david-dm.org/semantic-release/semantic-release/next.svg)](https://david-dm.org/semantic-release/semantic-release/next)
-[![devDependency Status](https://david-dm.org/semantic-release/semantic-release/next/dev-status.svg)](https://david-dm.org/semantic-release/semantic-release/next#info=devDependencies)
+[![Dependency Status](https://david-dm.org/semantic-release/semantic-release/caribou.svg)](https://david-dm.org/semantic-release/semantic-release/caribou)
+[![devDependency Status](https://david-dm.org/semantic-release/semantic-release/caribou/dev-status.svg)](https://david-dm.org/semantic-release/semantic-release/caribou#info=devDependencies)
 
-[![Build Status](https://travis-ci.org/semantic-release/semantic-release.svg?branch=next)](https://travis-ci.org/semantic-release/semantic-release)
-[![Coverage Status](https://coveralls.io/repos/semantic-release/semantic-release/badge.svg?branch=next&service=github)](https://coveralls.io/github/semantic-release/semantic-release?branch=next)
+[![Build Status](https://travis-ci.org/semantic-release/semantic-release.svg?branch=caribou)](https://travis-ci.org/semantic-release/semantic-release)
+[![Coverage Status](https://coveralls.io/repos/semantic-release/semantic-release/badge.svg?branch=caribou&service=github)](https://coveralls.io/github/semantic-release/semantic-release?branch=caribou)
 
 Out of the box this is just about _commit-messages_, but you can do so much more.
 

package.json

@@ -70,7 +70,7 @@
     "tag": "next"
   },
   "release": {
-    "branch": "next"
+    "branch": "caribou"
   },
   "repository": {
     "type": "git",

src/index.js

@@ -115,6 +115,15 @@ npmconf.load({}, (err, conf) => {
             process.exit(1)
           }
 
+          try {
+            let shrinkwrap = JSON.parse(readFileSync('./npm-shrinkwrap.json'))
+            shrinkwrap.version = release.version
+            writeFileSync('./npm-shrinkwrap.json', JSON.stringify(shrinkwrap, null, 2))
+            log.verbose('pre', `Wrote version ${release.version} to npm-shrinkwrap.json.`)
+          } catch (e) {
+            log.silly('pre', `Couldn't find npm-shrinkwrap.json.`)
+          }
+
           writeFileSync('./package.json', JSON.stringify(_.assign(pkg, {
             version: release.version
           }), null, 2))