mod: bump version to 0.2.2
diff --git a/package.json b/package.json
index 695a226..10ccb10 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name"            : "difflib"
-  , "version"         : "0.2.1"
+  , "version"         : "0.2.2"
   , "description"     : "text diff library ported from Python's difflib module"
   , "homepage"        : "https://github.com/qiao/difflib.js"
   , "keywords"        : ["diff"]