Use symlink for demo

Author: ArthurClemens

demo/js/undomanager.js

@@ -4,6 +4,7 @@
   "description": "Simple undo manager to provide undo and redo actions in JavaScript applications.",
   "main": "lib/undomanager.js",
   "scripts": {
+    "postinstall": "sh scripts/link-lib.sh",
     "lint": "eslint --ext .js --fix .",
     "test": "jasmine-browser-runner runSpecs",
     "github": "cp -f ./lib/undomanager.js ./demo/js/ && cp -R demo/* ../gh-pages"

package-lock.json

@@ -0,0 +1,5 @@
+SOURCE="${PWD}/lib/undomanager.js"
+TARGET="${PWD}/demo/js/undomanager.js"
+
+rm -rf ${TARGET}
+ln -s ${SOURCE} ${TARGET}