chore(*): Add readline-sync dev dep

Author: christopherthielen

package.json

@@ -70,6 +70,7 @@
     "karma-phantomjs-launcher": "^1.0.2",
     "karma-script-launcher": "~0.1.0",
     "karma-systemjs": "^0.7.2",
+    "readline-sync": "^1.4.5",
     "rollup": "^0.41.4",
     "rollup-plugin-commonjs": "^7.0.0",
     "rollup-plugin-node-resolve": "^2.0.0",

yarn.lock

@@ -3041,6 +3041,10 @@ readdirp@^2.0.0:
     readable-stream "^2.0.2"
     set-immediate-shim "^1.0.1"
 
+readline-sync@^1.4.5:
+  version "1.4.5"
+  resolved "https://registry.yarnpkg.com/readline-sync/-/readline-sync-1.4.5.tgz#c70d2b1473ecabc1e4d533cbaf3e8249fb77e992"
+
 recast@^0.11.17:
   version "0.11.20"
   resolved "https://registry.yarnpkg.com/recast/-/recast-0.11.20.tgz#2cb9bec269c03b36d0598118a936cd0a293ca3f3"