always use the latest version from the diff plugin

Author: rtfpessoa

package.json

@@ -1,6 +1,6 @@
 {
   "name":     "diff2html-cli",
-  "version":  "0.2.1",
+  "version":  "0.2.2",
 
   "homepage": "https://www.github.com/rtfpessoa/diff2html-nodejs-cli",
   "description": "Fast Diff to colorized HTML",
@@ -56,7 +56,7 @@
     "commander": "2.7.1",
     "extend": "2.0.0",
     "pkginfo": "0.3.0",
-    "diff2html": "0.2.1"
+    "diff2html": "*"
   },
 
   "devDependencies": {