move lerna to dependencies, bootstrap on postinstall [skip ci]

should fix #36

package.json

@@ -20,6 +20,9 @@
     "url": "https://github.com/enigma-io/boundless/issues"
   },
   "main": "public/boundless.js",
+  "dependencies": {
+    "lerna": "2.0.0-beta.37"
+  },
   "devDependencies": {
     "autoprefixer-stylus": "^0.13.0",
     "babel-eslint": "^7.0.0",
@@ -46,7 +49,6 @@
     "html-webpack-inline-source-plugin": "0.0.6",
     "html-webpack-plugin": "^2.26.0",
     "jest-cli": "^18.0.0",
-    "lerna": "2.0.0-beta.37",
     "markdown-to-jsx": "^4.0.0",
     "mkdirp": "^0.5.1",
     "raw-loader": "^0.5.1",
@@ -85,6 +87,7 @@
   },
   "scripts": {
     "bootstrap": "lerna bootstrap",
+    "postinstall": "npm run bootstrap",
     "presite": "find docs/* -type d -maxdepth 0 -not -path '*assets' | xargs rm -rf && rm -f docs/index.html && rm -f docs/sitemap.xml && rm -f docs/assets/*.js && rm -f docs/assets/*.css",
     "site": "BABEL_ENV=site-production NODE_ENV=production webpack --config scripts/webpack.release.config.js",
     "postsite": "node scripts/build-indexes.js",