bump version to 0.2.0

Author: Eddie Cao

package.json

@@ -2,7 +2,7 @@
     "name": "mapcat",
     "description": "cat for source map files",
     "main": "lib",
-    "version": "0.1.0",
+    "version": "0.2.0",
     "engines": { "node" : ">=0.4.0" },
     "maintainers": [{
         "name": "Eddie Cao",