Add a script to update test shrinkwrap

package.json

@@ -18,7 +18,8 @@
   "scripts": {
     "pretest": "./scripts/prepare-test.sh",
     "test": "./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha -- test/node test/template && ./node_modules/.bin/mocha test/inception/test-inception.js -ig protractor",
-    "coveralls": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js"
+    "coveralls": "cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
+    "update-shrinkwrap": "./scripts/update-test-shrinkwrap.sh"
   },
   "dependencies": {
     "chalk": "~1.1.0",

scripts/update-test-shrinkwrap.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+rm -rf test/tmp/deps/node_modules test/tmp/deps/package.json test/tmp/deps/npm-shrinkwrap.json
+
+node test/template-cli.js deps
+
+cd test/tmp/deps
+
+npm install
+
+npm shrinkwrap --dev
+
+cp ./npm-shrinkwrap.json ../../npm-shrinkwrap.json