remove browserify-shim, update readme

browserify shim is actually useless now when debowerify is one of the transforms. If a bower package for example doesn't have a 'main' field defined it's still possible to include it by requiring the main file  like require('bad-bower-lib/dist/bad-bower')

package.json

@@ -21,7 +21,6 @@
   "devDependencies": {
     "bower": "~1.3.5",
     "browserify": "~6.1.0",
-    "browserify-shim": "~3.8.0",
     "chalk": "~0.5.1",
     "coffeeify": "~0.7.0",
     "deamdify": "^0.1.1",
@@ -45,14 +44,11 @@
     "vinyl-source-stream": "~1.0.0",
     "watchify": "~2.0.0"
   },
-  "browser": {},
-  "browserify-shim": {},
   "browserify": {
     "transform": [
       "coffeeify",
       "debowerify",
-      "deamdify",
-      "browserify-shim"
+      "deamdify"
     ]
   }
 }