Fix heroku lineman buildpack for cedar-14

Make heroku compile css (using compass) and build js (using lineman).

frontend/package.json

@@ -1,19 +1,10 @@
 {
   "name": "frontend",
-  "title": "An HTML/JS/CSS app",
+  "title": "Frontend for http://exercism.io",
   "version": "0.0.1",
   "private": true,
   "author": {
     "name": "John Doe",
     "company": "ACME, Inc."
-  },
-  "dependencies": {
-    "grunt": "~0.4.1",
-    "grunt-ngmin": "~0.0.2",
-    "lineman": ">=0.11.1"
-  },
-  "engines": {
-    "node": "~>0.10.5",
-    "npm": "~>1.2.18"
   }
 }

package.json

@@ -0,0 +1,21 @@
+{
+  "name": "exercism-nodejs-build",
+  "title": "package.json for triggering heroku buildpack",
+  "version": "0.0.1",
+  "private": true,
+  "author": {
+    "name": "Tejas Bubane"
+  },
+  "dependencies": {
+    "grunt": "~0.4.1",
+    "grunt-ngmin": "~0.0.2",
+    "lineman": ">=0.11.1"
+  },
+  "engines": {
+    "node": "~>0.10.5",
+    "npm": "~>1.2.18"
+  },
+  "scripts": {
+    "postinstall": "compass compile -e production --force && cd frontend && lineman build"
+  }
+}