Update script version

bower.json

 {
   "name": "c3",
   "main": "c3.min.js",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "homepage": "https://github.com/masayuki0812/c3",
   "authors": [
     "Masayuki Tanaka <masayuki0812@mac.com>"

package.json

 {
   "name": "c3",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "description": "D3-based reusable chart library",
   "main": "c3.js",
   "scripts": {